This class includes methods of treatment of the living body and apparatus used in the inspection and treatment of diseases, wounds, and other abnormal conditions of the bodies of humans and lower animals.
This class includes methods and means for manufacturing surgical appliances which are not classifiable in other classes.
(1) Note. This class appropriate subclasses, provides for a method of blood transfusion or artificial inseminations.
(2) Note. This class includes methods and apparatus wherein specific structure, adapted to be placed on or in the living body, is claimed, and further includes diagnostic or therapeutic methods and apparatus wherein no such specific structure is claimed, when the only disclosed utility is for diagnosis or treatment of a living body. In addition, subcombinations of surgical treatment or testing apparatus are classified in the class when not specifically provided for elsewhere.

LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Class 604, Surgery, is an integral part of Class 128, Surgery, and all notes and class lines of Class 128 apply to Class 604. Class 604 follows the hierarchy of Class 128, Class 604 merely replaces the Medicators and Receptors portion of Class 128. For the purpose of convenience, Class 604 is referred to as a separate Class.
LINE WITH CLASS 4
Generic terms such as "treatment'', "therapy'', "massage'', "hydrotherapy'', "hydromassage'', etc., are to be interpreted broadly for placement in Class 4 lacking a disclosed body treatment for a named medical condition or physical injury. Exceptions to this rule comprise generically disclosed and claimed hydrotherapy of the genitalia or any internal body tissues, or a device for applying a force which imparts a specific motion to the body or portion thereof, or a device which is disclosed as providing treatment resulting in an internal action on the body which shall be classified in Class 128 or one of its Class 600 series trailer classes as provided for therein.
LINE WITH CLASS 239
Generic terms such as "treatment'', "therapy", "massage",
"hydrotherapy'', "hydromassage'', etc. are to be interpreted broadly for placement in Class 239 lacking a disclosed body treatment for a named medical condition or physical injury. Exceptions to this rule comprise generically disclosed and claimed hydrotherapy of the genitalia or any internal body tissues, or a device for applying a force which imparts a specific motion to the body or portion thereof which shall be classified in Class 128 or one of its Class 600 series trailer classes as provided for therein.

REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, for a bathing device generically disclosed and claimed which does not provide medical treatment to the body for a named ailment or injury thereof. (See Lines With Other Classes and Within This Class, for the lines between Class 4 and Class 128 or one of its series trailer classes as provided for therein.)
5, Beds, 630 for a table designed to serve as a support for an animal during surgical operations, especially for a device attached to or combined with a table comprising a mere body support for surgical operations.
27, Undertaking, for means for embalming or otherwise caring for the dead body.
36, Boots, Shoes, and Leggings, appropriate subclasses for foot coverings and foot devices for general use.
73, Measuring and Testing, 863 for samplers; and particularly subclasses 864.01+ for a pipette (e.g., syringe, hollow needle, etc.) which does not contact the living body.
81, Tools, subclass 9.22 for a tattooing device including means to reciprocate (e.g., vibrate) a perforating tool and to discharge coloring material into the perforations.
108, Horizontally Supported Planar Surfaces, 1 for a horizontally supported surface which is tiltable.
119, Animal Husbandry, for means for the treatment and general care of livestock, subclass 14.21 for milking catheters disclosed for that purpose and subclasses 712+ for body harness of general application. See the search notes thereunder.
132, Toilet, appropriate subclasses for methods and devices used by persons in making their toilet, particularly 212 for devices for treating, dressing, or manipulating the hair, and subclasses 73+ for devices for manicuring the nails and for removing corns and other callosities by abrasion.
168, Farriery, for means for the care of the feet of animals.
239, Fluid Sprinkling, Spraying, and Diffusing, for a spray head, including the massaging type generically disclosed and claimed which does not provide medical treatment for a named ailment or injury. (See Lines With Other Classes and Within This Class, for the lines between Class 239 and Class 128 or one of its series trailer classes as provided for therein.)
257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), 414 for such devices used as sensors (e.g., chemical sensors, pressure sensors, etc.), that are small enough to be inserted in a body to be used for measuring and testing.
297, Chairs and Seats, appropriate subclasses for a chair whose component parts may be manipulated to place an occupant in a desired position to facilitate examination or treatment, but which have no examination or treatment means combined therewith.
312, Supports: Cabinet Structure, subclass 209 for cabinets specially designed for laboratory, dental, barber or medical use.
351, Optics: Eye Examining, Vision Testing and Correcting, 1 for optical eye examining and vision testing instruments; and subclasses 41+ for spectacles and eyeglasses. See also References to Other Classes in the Class 351 Class Definitions and (1) Note under subclasses 200+ of this class for statements as to subject matter classified in this class and Class 128.
401, Coating Implements With Material Supply, subclass 28 for a multiple (massaging) tip, multiple discharge implement adapted to be applied to the human body.
424, Drug, Bio-Affecting and Body Treating Compositions, appropriate subclass for a medicinal composition or process of use of a compound or composition and particularly subclass 467 for a composition of that class comprising a structural feature and see the definition of that class for the line between Class 128 and Class 424.
428, Stock Material or Miscellaneous Articles, appropriate subclasses, for a stock material product in the form of a single or plural layer web or sheet, and 364 for a structurally defined (e.g., crimped, particular cross-section) or coated rod, strand, fiber or filament.
433, Dentistry, appropriate subclasses for subject matter restricted to (sole disclosure) specific dental steps or means. Apparatus wherein a specific nondental surgical use is disclosed and are classified as originals in Class 128.
435, Chemistry: Molecular Biology and Microbiology, subclass 1 and 2 for a method of maintaining the viability of an animal tissue or cell, e.g., bone, blood or sperm.
436, Chemistry: Analytical and Immunological Testing for processes of chemical testing, processes of an vitro antigen-antibody testing and compositions therefore.
520, Synthetic Resins or Natural Rubbers, especially Class 523, 105 for nonmedicated compositions containing a synthetic resin or natural rubber having utility specifically intended to be for contact with living animal tissue; and subclass 111 for a composition which is to be used in a protective bandage for an open wound or as a tape adhesive, binder, or impregnate for a body absorbent device; or to processes of preparing said compositions.
623, Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefore, for prosthetic devices.

TRUSS:
This subclass is indented under the class definition. Surgery in which an appliance presses on or treats a portion(s) of the body for supporting and protecting.
(1) Note. This subclass also includes covers for truss belts, frames and pads.

SEE OR SEARCH CLASS:
450, Foundation Garments, 7 for breast bandages or brassieres combined with abdominal supporter or bandages wherein the latter has no claimed pressure pads or claimed means for holding or retaining such a pad and subclasses 94+ for abdominal supporters or bandages having no claimed pressure pad or claimed means for holding or retaining such a pad.
602, Surgery: Splint, Brace, or Bandage, 32 for skeletal traction applicator.

Abdominal:
This subclass is indented under subclass 95.1. Subject matter having a truss pad which covers or supports a large section of that portion of the body lying between the thorax and the pelvis.

Head:
This subclass is indented under subclass 95.1. Subject matter for exerting pressure on the uppermost or foremost portion of the body.

Perineal:
This subclass is indented under subclass 95.1. Subject matter for exerting pressure on that portion of the body having a pelvic region containing urogenital and rectal passages which are bounded in part by a pubic arch, in the back by a cocyx, and laterally by a portion of a hip bone.

Support:
This subclass is indented under subclass 95.1. Subject matter in which belt or frame means functions to both maintain a truss pad against a particular portion of the body and aids in applying pressure to said truss pad.
(1) Note. Back support members for trusses are cross-referenced in this subclass because of their support nature.

Belt wholly flexible:
This subclass is indented under subclass 99.1. Subject matter wherein the pad maintaining and pressuring means is a long, narrow strip of pliable material capable of being bent to the shape of the body.

Elastic in part:
This subclass is indented under subclass 100.1. Subject matter wherein a portion of the pliable material is resilient and capable of returning to its original shape or form after
deformation.

Belt and frame:
This subclass is indented under subclass 99.1. Subject matter wherein a long, narrow strip of pliable material capable of being bent to the shape of the body has structure mad of metal or equivalent stiff material which holds the pad.

Frame hinged:
This subclass is indented under subclass 99.1. Subject matter in which the pad holder structure is of several parts which parts (which parts) are joined in such a way as to permit relative rotation or pivoting with respect to one another.

Frame wholly metallic:
This subclass is indented under subclass 99.1. Subject matter wherein the pad support is metallic.
(1) Note. Parents disclosing metallic pad supports covered with, lacquer, shellac, rubber, plastic, etc. would be classifiable here.

Frame with auxiliary straps:
This subclass is indented under subclass 99.1. Subject matter wherein the support means is provided with flexible straps which aid in positioning the support upon the body.

Pad carrier:
This subclass is indented under subclass 99.1. Subject matter wherein significance is attributed to the belt or
frame support means is separable from the belt or frame support.

Detachable:
This subclass is indented under subclass 106.1. Subject matter wherein the pad support means is separable from the belt or frame support.

Pivoted:
This subclass is indented under subclass 106.1. Subject matter wherein the pad support means is capable of rotating or swinging motion about a fixed point on the frame or belt on which it is supported.

Resilient:
This subclass is indented under subclass 108.1. Subject matter wherein the pivotable pad support is flexibly or yieldably mounted on the belt or frame support means.

Clamped:
This subclass is indented under subclass 108.1. Subject matter wherein the pivoted member is secured to the belt or frame support means by a gripping means.

Resilient:
This subclass is indented under subclass 106.1. Subject matter wherein the pad support means is flexibly or yieldably mounted on the belt or frame support means.

Pad:
This subclass is indented under subclass 95.1. Subject matter wherein significance is attributed to the pressing or pressure applying element.

Composition:
This subclass is indented under subclass 112.1. Subject matter wherein significance is attributed to the component materials or make up of the pressing or pressure applying element.

Medicating:
This subclass is indented under subclass 112.1. Subject matter wherein the pressing or pressure applying element is provided or pressure applying element is provided with a portion or portions which contain or carry a medicament.

Rigid:
This subclass is indented under subclass 112.1. Subject matter wherein the pressing or pressure applying element is inflexible.

Adjustable center:
This subclass is indented under subclass 112.1. Subject matter wherein the pressing or pressure element has a middle or core portion which is capable of being reoriented in respect to the body of the pressing or pressure element.

Resilient:
This subclass is indented under subclass 112.1. Subject
matter wherein the pressing or pressure element is, at least in part, flexible or yieldable.

Inflated:
This subclass is indented under subclass 117.1. Subject matter wherein the flexible or yieldable portion of the pressing or pressure element is capable of being expanded or distended by air pressure.

Spring:
This subclass is indented under subclass 117.1. Subject matter wherein the flexible or yieldable pressing or pressure element is means which is capable or regaining its original shape after being compressed or extended beyond its elastic limit.

Stuffed:
This subclass is indented under subclass 117.1. Subject matter wherein the flexible or yieldable portions of the pressing or pressure element is packed with a material.

Connections:
This subclass is indented under subclass 112.1. Subject matter wherein significant is attributed to an element which secures the pressing or pressure element or pressure pad upon a pad carrier or other pad support means.

Ball and socket:
This subclass is indented under subclass 121.1. Subject matter wherein the securing means is a spherical element which is designed to fit into an opening or cavity which permits rotation of said element relative to said opening or
cavity.

Hinged:
This subclass is indented under subclass 121.1. Subject matter wherein the securing element is a jointed or flexible means which permits turning or pivoting relative to a stationary member.

Clamped:
This subclass is indented under subclass 121. Subject matter. wherein the securing element is a gripping means.

Resilient:
This subclass is indented under subclass 121.1. Subject matter wherein the securing element is a flexible or yieldable means.

Spring only:
This subclass is indented under subclass 125.1. Subject matter wherein the flexible or yieldable means is capable or resuming its original shape or position upon being compressed or extended beyond its elastic limit.

MEANS FOR PASSING RESPIRATORY GAS THROUGH BODY OF LIQUID BEFORE INHALATION:
This subclass is indented under the class definition. Subject matter for releasing into a body of liquid a breathable gas that is thereafter inhaled by a living thing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.14 for atomizers or sprayers.
200.24 for respiration devices, per se.
200.29 for means for releasing exhaled gas in finely divided form from a diving mask or helmet to reduce the possibility of bubbles of the gas being detected.
203.12 for other means for mixing an agent with breathed gas.

Pocket type:
This subclass is indented under subclass 200.11. Subject matter comprising a self-contained means intended to be carried in a pocket of a garment.

Plural orifice means passing gas into liquid:
This subclass is indented under subclass 200.11. Subject matter including plural orifice means passing the gas into the body of liquid.

LIQUID MEDICAMENT ATOMIZER OR SPRAYER:
This subclass is indented under the class definition. Subject matter which reduces a liquid medicament (e.g., water, disinfectant, decomgestant, etc.) to minute particles, or which produces a diffused spray of such liquid (e.g., shower head-type diffusers, etc.).
(1) Note. Atomizers or sprayers, per se, are classified in other classes (e.g., Class 239, Fluid Sprinkling, Spraying, and Diffusing) when no means particularly adapting them for use on or in a living body is claimed, or when no structure adapted to be connected to a respiratory device for a living thing is claimed and something other than a medicament is atomized or sprayed.
(2) Note. Atomizers for dispensing adhesive to body tissue, either internally or externally, are classified in Class 604 when the atomized adhesive is not inhaled.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.11 for devices passing gas through a body of liquid
before inhalation.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 131 for combustion charges atomized devices.
239, Fluid Sprinkling, Spraying, and Diffusing, for other than medicating atomizers and sprayers.
261, Gas and Liquid Contact Apparatus, 78 for atomizer type contact devices.
604, Surgery, subclass 94.01 for dual nozzles inserted into nasal passages; subclasses 212+ for collapsible material reservoir structure such as squeeze bulbs; and subclasses 264+ for noz inserted in the body.

With tongue depressor:
This subclass is indented under subclass 200.14. Subject matter including means for depressing the user's tongue so that it will not occlude the gas passage to the lungs.

Ultrasonic:
This subclass is indented under subclass 200.14. Subject matter including a means for atomizing or spraying a liquid by producing a vibratory frequency therein higher than that detectable by the human ear.

Rotating:
This subclass is indented under subclass 200.14. Subject matter including a rotating means (e.g., a spinning disk from which liquid is discharged by centrifugal force, etc.) for atomizing or spraying.

Spray impinged against baffle in or adjacent flow conduit:
This subclass is indented under subclass 200.14. Subject
matter including a baffle in a flow conduit or adjacent the outlet of a flow conduit, upon which baffle the atomized or sprayed fluid impinges.
(1) Note. The baffle in this subclass must be an additional element in or adjacent the flow conduit, not merely a wall portion of the conduit.

Means for selectively dispensing different fluids:
This subclass is indented under subclass 200.14. Subject matter including means for selectively dispensing different fluids, e.g., air or water.

Gas stream aspirating medicament from reservoir:
This subclass is indented under subclass 200.14. Subject matter including means for sucking a medicament from a reservoir.

Gas flow induced by expansion chamber device (e.g., piston/cylinder ram, squeeze bulb, etc.):
This subclass is indented under subclass 200.21. Subject matter including an expansion chamber means for inducing gas flow.

Pre-pressurized container holding medicament:
This subclass is indented under subclass 200.14. Subject matter including a pre-pressurized container holding the medicament.
(1) Note. Devices found in this subclass are usually of the "aerosol" type wherein the container holding the medicament is pressurized, during manufacture, with a gas which acts to expel the medicament during use.

RESPIRATORY METHOD OR DEVICE:
This subclass is indented under the class definition. Subject matter relating to the supply of a breathable gas to, or exhaust of such gas from, a living body.
(1) Note. Respirators claiming a breath flow meter are classified here where the breath flow indication is merely for monitoring the proper operation of the respirator. Breath flow measurement devices for diagnostic purposes are found in Class 600, subclasses 538+.
(2) Note. Respiratory gas includes gas taken into the body through the skin.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.11 for respiration devices claiming means for passing a breathable gas through a body of liquid.
200.14 for respiration devices claiming atomizer or sprayer means.

SEE OR SEARCH CLASS:
95, Gas Separation: Processes, for processes of gas separation, per se.
96, Gas Separation: Apparatus, for apparatus for gas separation, per se.
137, Fluid Handling, appropriate subclasses for valves and flow regulating means not combined with body accommodating means.
251, Valves and Valve Actuation, for a valve, per se.
452, Butchering, subclass 66 for gas chambers used in killing animals for food.

Artificial gill, or means for separating entrained air from liquid stream:
This subclass is indented under subclass 200.24. Subject matter including an artificial gill or a means for separating entrained air from a liquid stream.

SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, 155 for degasifying means for a liquid, per se.

Means placed in body opening to facilitate insertion of breathing tube:
This subclass is indented under subclass 200.24. Subject matter including means placed in a natural or previously formed opening in the body to facilitate the insertion of a breathing tube therein.
(1) Note. Classifiable here are respiration devices including an outer tube which may be inserted prior to insertion of a coaxial inner tube, e.g., devices including coaxial tubes where the inner tube may be removed (as for cleaning, etc.), since the outer tube is inherently a means to facilitate insertion of a breathing tube even if not so disclosed. Also classifiable here are devices insertable into a breathing tube to facilitate insertion of the latter within the body.

SEE OR SEARCH THIS CLASS, SUBCLASS:
207.14 for respiratory gas supply means entering the mouth or a tracheotomy incision.

SEE OR SEARCH CLASS:
604, Surgery, 264 for nozzles, trocars, and catheters inserted into the body for therapeutic purposes.

Gas stream directed away from face mask to penetrate contaminated atmosphere:
This subclass is indented under subclass 200.24. Subject matter wherein a gas stream is directed away from a face mask to penetrate a contaminated atmosphere, usually for the purpose of enabling the user of the face mask to see clearly.
(1) Note. See subclass 205.25 for the definition of a face mask.

SEE OR SEARCH CLASS:
454, Ventilation, 88 for protective air currents used in a ventilating system.

Body or head supported means, other than face mask or hood, with gas stream to screen face or penetrate contaminated atmosphere:
This subclass is indented under subclass 200.24. Subject matter including means, other than a face mask or hood, with a gas stream to screen the user's face or penetrate a contaminated atmosphere.
(1) Note. A "hood" as used herein is a cover for the scalp and face. See subclass 205.25 for the definition of a face mask.

SEE OR SEARCH CLASS:
454, Ventilation, 88 for protective air currents used in a ventilating system.

Underwater exhalation dispersing means:
This subclass is indented under subclass 200.24. Subject matter for dispersing exhaled gas from a diver's mask, helmet, or other underwater apparatus into ambient water in finely divided form.
(1) Note. Devices in this subclass are usually for preventing detection of the diver or for decreasing the noise caused by exhalation into water to improve communication between divers.

Draw-type snorkel:
This subclass is indented under subclass 200.24. Subject matter for use under water including means extending to the surface of the water to allow the user to draw air from the atmosphere with no means to supply respiratory gas under positive pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:
201.27 for diving or swimming devices including a head cover.
204.18 for diving or swimming devices supplying respiratory gas under positive pressure.

Corrective or magnifying lens combined with face mask having eyepiece or transparent viewing portion:
This subclass is indented under subclass 200.24. Subject matter including a face mask with an eyepiece or transparent viewing portion and an additional corrective or magnifying lens.
(1) Note. See subclass 205.25 for the definition of a face mask.

Inhaled gas heated or humidified by exhaled gas:
This subclass is indented under subclass 200.24. Subject matter wherein the inhaled gas is heated or humidified by exhaled gas.
(1) Note. This subclass includes, inter alia, devices including merely a filter means functioning as a heat exchanger or humidifier by trapping warm water vapor present in the exhaled gas and subsequently transferring the heat and water vapor to gas inhaled through the filter. Similar filter means are placed elsewhere under subclass 200.24 where no heat exchange or humidifying feature is disclosed (see especially subclasses 205.27+).

Viewing strip slidable relative to mask:
This subclass is indented under subclass 200.24. Subject matter including a viewing strip slidable relative to a face mask so that a portion of the strip that has become damaged or soiled during use of the mask can be replaced by a clear portion of the strip.
(1) Note. See subclass 205.25 for the definition of a face mask.

Means for keeping viewing member (e.g., eyeglass, transparent face shield, etc.) clear:
This subclass is indented under subclass 200.24. Subject matter including means for keeping a viewing member clear.

SEE OR SEARCH THIS CLASS, SUBCLASS:
206.22 for means for handling liquid (e.g., saliva, breath condensation, etc.) accumulated in a mask.

Wiper:
This subclass is indented under subclass 201.15. Subject matter including a wiper for keeping the viewing member clear.

Mask with porous lower filtering portion and impervious upper portion shielding user's eyeglasses from exhaled breath:
This subclass is indented under subclass 201.15. Subject matter including a mask with a porous lower filtering portion and an impervious upper portion shielding the user's eyeglasses from the exhaled breath.
(1) Note. Devices in this subclass are usually a "surgical-type" mask formed entirely of cloth, etc., with an impervious upper portion.

Means for preventing nasal inhalation:
This subclass is indented under subclass 200.24. Subject matter including means for preventing nasal inhalation

Means for transmitting, or facilitating, voice communication from face mask, hood, or helmet:
This subclass is indented under subclass 200.24. Subject matter including means for transmitting, or facilitating, voice communication from a face mask, hood, or helmet.
(1) Note. A patent is placed here when merely a means adapted to hold a voice transmitting means is claimed. See subclass 205.25 for the definition of a face mask, and (1) Note under subclass 200.28 for the definition of a hood.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.29 for a device for dispersing exhaled gas from a diver's mask or helmet into ambient water in finely divided form.

Using liquified oxygen:
This subclass is indented under subclass 200.24. Subject matter using liquified oxygen, usually as a source of gas for breathing.

SEE OR SEARCH CLASS:
62, Refrigeration, for devices for manufacturing and handling liquified gas.

Including body or head supported means covering user's scalp:
This subclass is indented under subclass 200.24. Subject matter including a means which covers the user's scalp and which is supported by the head or other portion of the user's body.
(1) Note. Straps extending over or around the head to attach a face mask are not considered a scalp cover for this subclass.

And nose and mouth also covered:
This subclass is indented under subclass 201.22. Subject matter wherein a portion of the scalp covering means, or a face mask associated therewith, overlies the nose and mouth.
(1) Note. See subclass 205.25 for the definition of a face mask.

Face mask, visor, or like face-covering means hinged to scalp covering means:
This subclass is indented under subclass 201.23. Subject matter wherein a face mask, visor, or like face-covering
means is hinged to a means covering the user's scalp.
(1) Note. See subclass 205.25 for the definition of a face mask.

Means for removing substance from respiratory gas:
This subclass is indented under subclass 201.23. Subject matter including means for removing a substance from the respiratory gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:
204.16 205.12, and 205.27+, for other means for removing a substance from respiratory gas.

SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, for apparatus for gas separation, per se.

Including means inserted in mouth:
This subclass is indented under subclass 201.23. Subject matter including means held in the user's mouth.

Diving or swimming apparatus:
This subclass is indented under subclass 201.23. Subject matter for use in diving or swimming.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.11 for draw-type snorkeling devices.
204.18 for diving or swimming devices supplying respiratory gas under positive pressure where no head cover, or associated face mask, overlying the nose and mouth is claimed.

SEE OR SEARCH CLASS:
2, Apparel, 2.18 for guards and protectors, diving type, for diving apparel where no respiration means is claimed.
364, Electrical Computers and Data Processing Systems, subclass 418 for diver decompression computers.
405, Hydraulic and Earth Engineering, 186 for diving suits including Class 405 structure and where no respiration means is claimed.
441, Buoys, Rafts, and Aquatic Devices, 55 for swimming aids or buoyant devices where no respiration means is claimed.

Having valve, or valve control, structure:
This subclass is indented under subclass 201.23. Subject matter including a valve, or valve control, structure.
(1) Note. A patent is placed as an original in this subclass only if it claims structural details of a valve, (i.e., a mere nominal recitation of a valve is insufficient to place a patent here.

Garment associated with head cover:
This subclass is indented under subclass 201.23. Subject matter including an item of clothing (e.g., a diving suit, etc.) associated with the head cover.

Flight suit:
This subclass is indented under subclass 201.29. Subject matter wherein the garment is a flight suit.

SEE OR SEARCH CLASS:
2, Apparel, 2.11 for an astronaut's body covering and subclass 2.14 for an aviator's body covering.

Hypobaric body chamber:
This subclass is indented under subclass 200.24. Subject matter including a chamber for subjecting the body to less than atmospheric pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:
205.26 for atmosphere enclosures, such as oxygen tents and chambers, for pressurizing the whole body.

SEE OR SEARCH CLASS:
454, Ventilation, subclass 70, 238, 255, and 340 for living enclosures having automatically controlled pressure conditions without the addition of medicaments or other surgical treatment.

Combined with or convertible to a nonrespiratory device, or having a nonrespiratory function other than hyperbaric treatment:
This subclass is indented under subclass 200.24. Subject matter combined with or convertible to a nonrespiratory device, or having a function not involved with breathing or with hyperbaric treatment (i.e., application of pressure to the body, as in diver decompression, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
205.26 for an enclosure wherein gas such as air is placed under pressure to apply force against a person's body, the gas also simultaneously being used for respiration by the person in the enclosure.

SEE OR SEARCH CLASS:
604, Surgery, 23 for gas introduced or removed from the body for therapeutic purposes other than breathing or inhaling.

Having buoyancy chamber:
This subclass is indented under subclass 202.13. Subject matter including a buoyancy chamber.

Having means for facilitating ingestion of food or drink:
Subject matter under 202.13 including a means for facilitating intake of food or drink by a user of the apparatus.

Means effecting nonrespiratory medical treatment:
This subclass is indented under subclass 202.13. Subject matter including means for medical treatment which does not involve respiration.

Device usable either as inhaler or means for rubbing medicament on body surface:
This subclass is indented under subclass 202.16. Subject matter including a means usable either for inhaling breathed gas (usually mixed with a medicament) or for rubbing medicament on a body surface.

Pillow or other support exclusively for head:
This subclass is indented under subclass 202.13. Subject matter including a pillow or other support exclusively for the head, e.g., a pillow provided with means for releasing a treating agent into air breathed by a person using the pillow.

Garment:
This subclass is indented under subclass 202.13. Subject matter including an item of clothing.

Smoking device simulator:
This subclass is indented under subclass 200.24. Subject matter including structure simulating a smoking device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
203.12 for specific means for mixing treating agent with breather gas.

SEE OR SEARCH CLASS:
131, Tobacco, 171 for smoking devices.

Means for indicating improper condition of apparatus:
This subclass is indented under subclass 200.24. Subject matter for indicating an improper operating condition of the apparatus.

Means for preventing electric shock or arcing:
This subclass is indented under subclass 200.24. Subject matter including means for preventing electric shock or arcing.

Means for protecting user from pressure wave or flame resulting from gas ignition:
This subclass is indented under subclass 200.24. Subject matter for protecting a patient from a pressure wave or a flame resulting from gas ignition.

SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, subclass 192 for similar safety devices.
222, Dispensing, subclass 189.01 for dispensing means having a flame arrester.

Ozone or ion generation:
This subclass is indented under subclass 200.24. Subject matter including means for producing ozone or ions for inclusion in breathed gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:
207.27 for devices, other than respiration devices, for
applying ozone to the body.

SEE OR SEARCH CLASS:
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, 186.07 for devices producing ozone by electrostatic field or electrical discharge.

Gas produced by electrolysis or chemical reaction:
This subclass is indented under subclass 200.24. Subject matter including means for producing the respiratory gas by electrolysis or by chemical reaction.

SEE OR SEARCH CLASS:
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, 120 for devices for chemically purifying and generating respiratory gas.
423, Chemistry of Inorganic Compounds, 579 for oxygen generating chemicals.

Means for quickly connecting or disconnecting apparatus components:
This subclass is indented under subclass 200.24. Subject matter including means for quickly joining or releasing apparatus components.

SEE OR SEARCH CLASS:
285, Pipe Joints or Couplings, for quick release-type pipe joints or couplings.
439, Electrical Connectors, 190 for electrical connectors with fluid passageways.

Means using rescuer's breath for supplying respiratory gas to another person:
This subclass is indented under subclass 200.24. Methods and apparatus comprising a means using one person's breath to effect flow of breathable gas into another person's lungs.
(1) Note. Under this subclass, a rescuer's breath may enter the lungs of another person in need of resuscitation, or may be used to force atmospheric air or other breathable gas into such person.

Movable wall separating breath of rescuer and victim:
This subclass is indented under subclass 202.28. Subject matter including a movable wall preventing the breath of one person from reaching the lungs of other person, generally for the purpose of preventing cross-contamination.

SEE OR SEARCH THIS CLASS, SUBCLASS:
909 for means for preventing patient cross-contamination.

Valved:
This subclass is indented under subclass 202.28. Subject matter including valve means.

Means for mixing treating agent with respiratory gas:
This subclass is indented under subclass 200.24. Subject matter including means for mixing a treating agent with gas breathed by a living thing.
(1) Note. A mere chamber, such as the interior of a face mask, with separate means supplying a treating agent and a respiratory gas thereto, is considered a means for mixing under this subclass.
(2) Note. Under this subclass, substances other than oxygen or atmospheric air (e.g., helium, carbon-dioxide, nitrogen, anesthetic, water vapor, etc.) are considered treating agents, with the exception that CO[supscrpt]2[end supscrpt] or nitrogen exhaled and then rebreathed with additional O[supscrpt]2[end supscrpt] or air are not considered treating agents.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.14 for atomizers or sprayers.
518 for methods of mixing the therapeutic agent with a delivery compound, either gas or liquid

Means for supplying anesthetic under patient's control:
This subclass is indented under subclass 203.12. Subject matter including means for supplying anesthetic under a patient's control.
(1) Note. A patent is placed in this subclass only when disclosed as having a means (e.g., a valve or regulator, etc.) operated by the patient's hand or other body member to control his supply of anesthetic gas. Devices merely responsive to a patient's breathing, for example, are found elsewhere.

Control means responsive to condition other than user's airway pressure:
This subclass is indented under subclass 203.12. Subject matter including a control means responsive to a condition other than the patient's airway pressure.

Particulate treating agent carried by respiratory gas:
This subclass is indented under subclass 203.12. Subject matter wherein a particulate treating agent is carried by the respiratory gas.

Means for mixing respiratory gas with water vapor and another treating agent:
This subclass is indented under subclass 203.12. Subject matter including a means for mixing the respiratory gas with water vapor and another treating agent.

Electrically heated means producing water vapor:
This subclass is indented under subclass 203.16. Subject matter including an electrically heated means producing water vapor.

Means for mixing treating agent with oral exhalation and directing mixture into nasal passage:
This subclass is indented under subclass 203.12. Subject matter including means for mixing treating agent with gas exhaled from the mouth and directing the mixture into a nasal passage.

Means for controlling gravity flow of treating agent from holder:
This subclass is indented under subclass 203.12. Subject matter including a means for controlling gravity flow of a treating agent from a holder.

Means broken or pierced to supply treating agent:
This subclass is indented under subclass 203.12. Subject matter including a means that is broken or pierced to supply a treating agent, e.g., a glass container easily broken to release an anesthetic therefrom.

Means for supplying, or permitting inhalation of, separate streams of treating agent/respiratory gas mixture through nasal passages:
This subclass is indented under subclass 203.12. Subject matter including means for supplying, or permitting inhalation of, separate streams of treating agent/respiratory gas mixture through air passage of the nose.
(1) Note. Methods and apparatus in this subclass usually include a pair of nozzles or treating agent holders which are respectively inserted into the nasal passages.

SEE OR SEARCH THIS CLASS, SUBCLASS:
207.18 for devices including a respiratory gas supply means entering a nasal passage with no means for mixing a treating agent with the respiratory gas.

Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof:
This subclass is indented under subclass 203.12. Subject matter comprising a tube having a discharge aperture for a mixture of air and treating agent at one end thereof, the tube being of such size that it can be conveniently carried in a pocket of a garment and air being sucked through the tube by the user.

With gas flow control means other than pivotal or removable closure:
This subclass is indented under subclass 203.23. Subject matter including a gas flow control means other than a pivotal or removable closure.

Means for varying treating agent/respiratory gas ratio:
This subclass is indented under subclass 203.12. Subject matter including a means for varying the amount of treating agent added to respiratory gas.

Means for heating treating agent, respiratory gas, or mixture thereof:
This subclass is indented under subclass 203.12. Subject matter including a means for heating the treating agent, the respiratory gas, or a mixture thereof.

Electric:
This subclass is indented under subclass 203.26. Subject matter including an electric heating means.

Including expandable bag, bellows, or squeeze bulb:
This subclass is indented under subclass 203.12. Subject matter including an expandable bag, bellows, or a resilient squeeze bulb.

Including face mask covering nose and mouth:
This subclass is indented under subclass 203.12. Subject matter including a face mask covering the nose and mouth.
(1) Note. See subclass 205.25 for the definition of a face mask.

Treating agent holder solely supported by head:
This subclass is indented under subclass 203.12. Subject matter including a treating agent holder solely supported by the user's head.

Holder solely supported by nose:
This subclass is indented under subclass 204.11. Subject matter wherein the holder is supported by the user's nose.

Treating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.):
This subclass is indented under subclass 203.12. Subject matter wherein the treating agent is evaporated from an absorbent having a large surface area.

SEE OR SEARCH THIS CLASS, SUBCLASS:
202.21 for smoking device simulators with extended surface absorbents.

Respiratory gas passed over surface of liquid treating agent in reservoir:
This subclass is indented under subclass 203.12. Subject matter wherein the respiratory gas is passed over the surface of liquid treating agent in a reservoir.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.11 for means for passing the respiratory gas through a body of liquid before inhalation.

Means for cooling respiratory gas or respiration device:
This subclass is indented under subclass 200.24. Subject matter including a means for cooling respiration gas or the device supplying such gas.

Substance removed from respiratory gas by cooling:
This subclass is indented under subclass 204.15. Subject matter wherein a substance is removed from the respiratory gas by cooling the latter.
(1) Note. The term "respiratory gas" includes inhaled or exhaled gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:
205.12 and 205.27+, for other means for removing a substance from respiratory gas.

SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, for apparatus for gas separation with cooling means.
165, Heat Exchange, for apparatus where only indirect heat exchange is involved.

Means for heating respiratory gas or respiration device:
This subclass is indented under subclass 200.24. Subject matter including a means for heating respiratory gas or the device supplying such gas.

Means for supplying respiratory gas under positive pressure:
This subclass is indented under subclass 200.24. Subject matter including a means for supplying a breathed gas to a living thing under pressure greater than ambient pressure.
(1) Note. A patent is placed in this subclass, or in an indent thereunder, even when the only claimed gas supply means is an expandable bag, bellows, or the like, on the ground that such a means holds gas under greater than ambient pressure when it is expanded against ambient pressure, as for example, when gas is exhaled by a person into the means and expands it.

Permanent magnet included in gas flow control means:
This subclass is indented under subclass 204.18. Subject matter wherein a gas flow control means includes a permanent magnet.

Electric control means:
This subclass is indented under subclass 204.18. Subject matter including an electric means for controlling operation of a respiration device.

Means for sensing partial pressure, or amount, of component in gas mixture:
This subclass is indented under subclass 204.21. Subject matter including a means for sensing the partial pressure, or amount, of a component in a gas mixture.

SEE OR SEARCH CLASS:
73, Measuring and Testing, 23 for other gas analysis devices.
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, 83 for gas analysis apparatus, per se.

Means for sensing condition of user's body:
This subclass is indented under subclass 204.21. Subject matter including a means for sensing a condition of the body of the living thing receiving the respiratory gas.

Fluidic control device utilizing coanda effect or jet impingement to alter fluid flow:
This subclass is indented under subclass 204.18. Subject matter including a fluidic control device utilizing the "Coanda" effect or jet impingement to alter fluid flow.

SEE OR SEARCH CLASS:
137, Fluid Handling, 803 for fluidic devices, per se.

Gas stream passed through jet nozzle or venturi passage:
This subclass is indented under subclass 204.18. Subject matter wherein a gas stream is passed through a jet nozzle or venturi passage.

Gas supply means responsive to breathing:
This subclass is indented under subclass 204.18. Subject matter wherein the gas supply means is responsive to the user's breathing.

Snap action toggle included in control mechanism:
This subclass is indented under subclass 204.26. Subject matter including a snap-action toggle in the gas supply control mechanism.

Bag or bellows included in control mechanism:
This subclass is indented under subclass 204.26. Subject matter including a bag or bellows in the gas supply control mechanism.

Control means responsive to variation in ambient pressure:
This subclass is indented under subclass 204.18. Subject matter including control means responsive to a variation in the ambient pressure.

Means for varying air/oxygen ratio:
This subclass is indented under subclass 204.18. Subject matter including a means for varying the amount of oxygen added to air breathed by the user.

Means for removing substance from respiratory gas:
This subclass is indented under subclass 204.18. Subject matter including means for removing a substance from gas breathed by a living thing.
(1) Note. The term "respiratory gas" includes inhaled or exhaled gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:
204.16 for devices for removing a substance from respiratory gas by cooling.
205.27 for other means for removing a substance from respiratory gas.

SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, for apparatus for gas separation, per se.

Respiratory gas supplied from expandable bag, bellows, or squeeze bulb:
This subclass is indented under subclass 204.18. Subject matter wherein respiratory gas is supplied from an expandable bag, bellows, or squeeze bulb.
(1) Note. Included here as a bellows is a piston movable within a cylinder and a flexible tube one end of which is attached to the piston and the other end of which is attached to the cylinder, thus providing a seal between the upper and lower portions of the cylinder.

Means for adjusting gas volume delivered to user from bag, bellows, or bulb during inflation-deflation cycle:
This subclass is indented under subclass 205.13. Subject matter including means for adjusting the volume of respiratory gas supplied to the user from the bag, bellows, or bulb during the inflation-deflation cycle of the latter.

Held in pressurizable housing:
This subclass is indented under subclass 205.13. Subject matter wherein the bag, bellows, or squeeze bulb is held in a pressurizable housing.

Biased to contracted or expanded position by mechanical means (e.g., weight, spring, etc.):
This subclass is indented under subclass 205.13. Subject matter where in the bag, bellows, or squeeze bulb is urged to a contracted or expanded position by a mechanical means.

Rebreathing bag or bellows:
This subclass is indented under subclass 205.13. Subject matter wherein an expandable bag or bellows enables the user to rebreathe a portion of the exhaled gas.
(1) Note. A rebreathing bag, even when claimed alone, is placed under subclass 205.17 on the basis that, in use, the fully expanded rebreathing bag holds exhaled gases under greater than ambient pressure. Therefor the bag is, at least initially, a means for supplying breathed gas under positive pressure.

Gas supplied by piston pump:
This subclass is indented under subclass 204.18. Subject matter wherein the respiratory gas is supplied by a pump comprising a piston movable within a cylinder.

Suction means for assisting exhalation:
This subclass is indented under subclass 204.18. Subject matter including a suction means for assisting exhalation.

Means broken or pierced to supply gas:
This subclass is indented under subclass 204.18. Subject matter including a means which is broken or pierced to supply the breathed gas.

Gas container supported on body:
This subclass is indented under subclass 204.18. Subject matter wherein a container for respiratory gas is supported on the user's body.

Indicator structure:
This subclass is indented under subclass 204.18. Subject matter including structure for indicating something about a condition of the respiratory gas or the respiration device supplying such gas.
(1) Note. A patent is placed as an original in this subclass only if it claims structural details of an indicator, (i.e., a mere nominal recitation of an indicator is insufficient to place a patent here).

Valve, or valve control, structure:
This subclass is indented under subclass 204.18. Subject matter including valve, or valve control, structure.
(1) Note. A patent is placed as an original in this subclass only if it claims structural details of a valve, (i.e., a mere nominal recitation of a valve is insufficient to place patent here).

Face mask covering a breathing passage:
This subclass is indented under subclass 204.18. Subject matter including a wall-like structure covering a breathing passage plus a portion of the face.

Atmosphere enclosure (e.g., oxygen tent, hyperbaric chamber for pressurizing whole body, etc.):
This subclass is indented under subclass 204.18. Subject matter including means enclosing a portion (e.g., the head) or all of the user's body and providing a breathable atmosphere.
(1) Note. Included in this subclass are devices intended merely for pressurization of the whole body, with no disclosure of a specific breathing apparatus. Since all such devices which enclose the entire body for an extended period of time must supply a breathable atmosphere, they are properly placed in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
202.12 for body chambers applying less than atmospheric pressure to the body.

SEE OR SEARCH CLASS:
135, Tent, Canopy, Umbrella, or Cane, 87, for portable shelters of general utility.

Means for removing substance from respiratory gas:
This subclass is indented under subclass 200.24. Subject matter including means for removing a material from respiratory gas.
(1) Note. The term "respiratory gas" in this subclass includes both inhaled and exhaled gas. Therefor, devices removing a substance from either inhaled or exhaled gas are classified here.

SEE OR SEARCH THIS CLASS, SUBCLASS:
204.16 for devices for removing a substance from respiratory gas by cooling.
205.12 for other devices for removing a substance from respiratory gas.

SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, for apparatus for gas separation, per se.

Carbon dioxide:
This subclass is indented under subclass 205.27. Subject matter for removing carbon dioxide from the respiratory gas.

Particulate filtering:
This subclass is indented under subclass 205.27. Subject matter for filtering solid particles from respiratory gas.

Including means inserted in nasal passage:
This subclass is indented under subclass 205.29. Subject matter including a means inserted into an air passage of the nose.

Face mask covering a breathing passage:
This subclass is indented under subclass 205.29. Subject matter including a wall-like structure covering a breathing passage plus a portion of the face.

Mask attached to ear:
This subclass is indented under subclass 206.12. Subject matter wherein the mask is attached to an ear of the user.

Mask adhesively attached to face:
This subclass is indented under subclass 206.12. Subject matter wherein the mask is secured to the user's face by means of adhesive.

With gas flow control valve:
This subclass is indented under subclass 206.12. Subject matter including a gas flow control valve.

With frame, shaping means, reinforcement, or filter formed of wire:
This subclass is indented under subclass 206.12. Subject matter including wire used as a filter (e.g., wire mesh through which air passes before it is inhaled, etc.) or as a
frame, shaping means, or reinforcement for the face mask.

With separate filter encircling element, or housing, securing filter on mask:
This subclass is indented under subclass 206.12. Subject matter including a separate filter encircling element, or housing, securing the filter on the mask.

Covering nose only:
This subclass is indented under subclass 206.12. Subject matter wherein the mask overlies the nose only.

Body of mask, other than viewing means, formed of porous filter material (e.g., surgical mask formed entirely of cloth, etc.):
This subclass is indented under subclass 206.12. Subject matter wherein the body of the mask, other than a viewing means, is formed of foraminous filter material.

Face mask covering a breathing passage:
This subclass is indented under subclass 200.24. Subject matter including a wall-like structure covering a breathing passage plus a portion of the face.

Means for handling liquid (e.g., saliva, breath condensation, etc.) accumulated in mask:
This subclass is indented under subclass 206.21. Subject matter including a means for handling liquid accumulated in the mask, e.g., a receptacle formed in the lower portion of the mask to receive liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:
201.15 for means for clearing a viewing member of breath condensation.

Mask/eyepiece sealing structure:
This subclass is indented under subclass 206.21. Subject matter including structure for sealing the contact area between a mask and an eyepiece carried thereby.
(1) Note. A patent is placed as an original in this subclass only if it claims structural details of the mask/eyepiece sealing means, (i.e., a mere nominal recitation of a mask/eyepiece sealing means is insufficient to place a patent here).

Mask/face sealing structure:
This subclass is indented under subclass 206.21. Subject matter including structure for sealing the contact area between a mask and the user's face.
(1) Note. A patent is placed as an original in this subclass only if it claims structural details of the mask/face sealing means, (i.e., a mere nominal recitation of a mask/face sealing means is insufficient to place a patent here).

Adhesive:
This subclass is indented under subclass 206.24. Subject matter wherein the sealing structure includes a material that will cause the mask to stick to the user's face.

SEE OR SEARCH THIS CLASS, SUBCLASS:
206.14 for a face mask adhesively attached to the user's face and associated with a means for removing a substance from the respiratory gas.

Closed air-filled passage adjacent mask edge (e.g., tubular
bead, etc.):
This subclass is indented under subclass 206.24. Subject matter wherein the sealing structure includes a closed air-filled passage adjacent the mask edge.

Means holding mask readily accessible for use:
This subclass is indented under subclass 206.21. Subject matter including means holding the mask in a position where it can be easily reached by a person for use.

Covering nose and mouth:
This subclass is indented under subclass 206.21. Subject matter wherein the mask overlies the nose and mouth.

Including means inserted in mouth:
This subclass is indented under subclass 206.28. Subject matter including a means held in the user's mouth.

Structure of means securing mask to head:
This subclass is indented under subclass 206.28. Subject matter including structure of means securing the mask to the head of the user.
(1) Note. A patent is placed here as an original only if structural details of the securing means are claimed, (i.e., a mere nominal recitation of means securing the mask to the head is insufficient to place a patent here).

Valve for controlling gas flow:
This subclass is indented under subclass 206.28. Subject matter including a valve for controlling gas flow.

Covering nose only:
This subclass is indented under subclass 206.21. Subject matter wherein the mask overlies only the nose.

Respiratory gas supply means enters mouth or tracheotomy incision:
This subclass is indented under subclass 200.24. Subject matter wherein the breathed gas supply means is placed in the mouth or a tracheotomy incision.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200.26 for means for inserting or guiding a breathing tube into the body.
202.21 for smoking device simulators where respiratory gas enters the mouth.
514 for method of introducing respiratory gas through the mouth

Breathing passage occluder:
This subclass is indented under subclass 207.14. Subject matter including means for closing the user's esophagus so that only the gas supply means communicates with the user's lungs.

Valve for controlling gas flow:
This subclass is indented under subclass 207.14. Subject matter including a valve for controlling gas flow.

Holding strap extending circumferentially of head or neck:
This subclass is indented under subclass 207.14. Subject matter wherein a holding strap extends circumferentially of the user's head or neck.

Respiratory gas supply means enters nasal passage:
This subclass is indented under subclass 200.24. Subject matter wherein the respiratory gas supply means is placed in an air passage of the user's nose.

Device for creating a tracheotomy incision:
This subclass is indented under subclass 207.14. Subject matter wherein the gas supply means either (a) forms the incision, or (b) has an incision forming device associated therewith to form the incision.

FEMALE REPRODUCTORY TRACT SHIELDS, SUPPORTS, OR BIRTH CONTROL DEVICES (E.G., PESSARIES, CONTRACEPTIVE DEVICES):
This subclass is indented under the class definition. Surgery for internal use designed to support, occlude or guard the female reproductory organs (e.g., consisting of uterus, ovarys, fallopian tubes and vagina) including preventing conception or pregnancy from occurring, and also including a means for insertion thereof.
(1) Note. Devices under the generic heading of mechanical birth control devices for females as well as pessary appliances for preventing uterine prolapse are classified herein.

Fallopian occluders:
This subclass is indented under subclass 830. Subject matter which functions to close or seal off the slender tubes which connect the uterus with the ovaries to prevent the passage of sperm therein to.
(1) Note. These devices can include clamps, plugs,
constrictive rings or shields.

With contraceptive, spermicidal or antifertility agent:
This subclass is indented under subclass 830. Subject matter wherein the supporting, occluding or guarding means contain an active agent thereon which functions to change the environmental conditions within the female reproductory tract so as to inhibit or prevent conception.
(1) Note. These agents may act to kill immobilize, block or otherwise prohibit sperms from fertilizing or reaching the egg.

Intrauterine:
This subclass is indented under subclass 832. Subject matter wherein the contraceptive, spermicidal or antifertility agent is inserted within the uterus or cervix uteri.

Pessaries:
This subclass is indented under subclass 830. Subject matter for internal vaginal use as a support for the uterus against prolapse.

External supporters:
This subclass is indented under subclass 834. Subject matter wherein the uterus support means is held in place by a means external to the vagina.

Inflatable:
This subclass is indented under subclass 834. Subject matter wherein the uterus support means is distended or expanded by the application of fluid pressure thereto in order to hold
itself in place within the vagina.

Diaphragms:
This subclass is indented under subclass 834. Subject matter comprising a thin flexible disk of natural or synthetic rubber or similar resilient material which is inserted into the vagina to cover the uterine opening or cervix.

Inserters and removers:
This subclass is indented under subclass 837. Subject matter comprising means specifically adapted for placing the diaphragm within or extracting it from the vagina.

Intrauterine:
This subclass is indented under subclass 834. Subject matter wherein the uterus support means is inserted within the cervix uteri or the uterus.

SEE OR SEARCH THIS CLASS, SUBCLASS:
833 for intrauterine spermicidal, contraceptive or antifertility agents.

Inserters and removers:
This subclass is indented under subclass 839. Subject matter comprising means specifically adapted for placing a uterine support within or extracting it from the uterus.

With cervical cap:
This subclass is indented under subclass 839. Subject matter wherein a cup shaped means is specifically shaped to fit against or over the cervix of the uterus.

MALE REPRODUCTORY TRACT SHIELDS OR BIRTH CONTROL DEVICES (E.G., PROPHYLACTICS, VAS DEFERENS VALVES, ETC.):
This subclass is indented under the class definition. Surgery for internal or external use which is designed to safe-guard or occlude the male reproductory organs from sexually transmitted disease or for preventing the passage of sperm.
(1) Note. Receptacle devices used to receive the male urethral discharge for collection purposes are classified in Class 604/347+.

Vas occluders (implants, etc.):
This subclass is indented under subclass 842. Subject matter wherein an internal device is surgically implanted which blocks, either permanently or temporarily, the passage of male sperm from the reproductory organs.
(1) Note. The devices in this subclass usually take the form of a plug, pinch clamp or a reversible valve.

SEE OR SEARCH THIS CLASS, SUBCLASS:
887 for other body inserted or implanted occluders.

SEE OR SEARCH CLASS:
600, Surgery, subclasses 30-32 for incontinent occluders.

Condoms:
This subclass is indented under subclass 842. Subject matter wherein the external shield or device is a penile sheath usually made of thin, flexible, natural or synthetic rubber material for use during sexual intercourse to prevent disease and to receive male sperm.

SEE OR SEARCH CLASS:
604, Surgery, subclass 349 for male organ worn receptacles for urine collection.

BODY REST, SUPPORTS OR POSITIONERS FOR THERAPEUTIC PURPOSES (E.G., SEXUAL, POSTURAL, HEAD, ETC.):
This subclass is indented under the class definition. Surgery which includes a device for holding, situating or resting the body or a portion thereof, during therapeutic activity or treatment.
(1) Note. These devices usually act to merely support, position or stabilize a user rather than restrain, protect or shield.
(2) Note. These devices are not to be confused with the subject matter found in Class 264, subclasses 322+ which relates basically to surgical tables for supporting a patient against the force of gravity.

SEE OR SEARCH THIS CLASS, SUBCLASS:
846 and 869, for shields and restrainers for protecting and immobilizing patients which have a purpose analogous to the devices found in this subclass.

SEE OR SEARCH CLASS:
119, Animal Husbandry, 712 for a controlling device which may support or position an animal for a therapeutic or other purpose, particularly subclasses 722+ for a device having a tiltable support for the animal.

BODY PROTECTING OR RESTRAINING DEVICES FOR PATIENTS OR INFANTS (E.G., SHIELDS, IMMOBILIZERS):
This subclass is indented under the class definition. Surgery including means to be worn or placed over the body for safeguarding the form injury from objects external to the body or for restraining a medical patient or a body from self injury or from annoying or injuring others.

SEE OR SEARCH CLASS:
2, Apparel, a various subclasses for other body guards that are worn for protection during nonmedical usage.

With fluid supply:
This subclass is indented under subclass 846. Subject matter wherein the restraining or protective means has means associated therewith to provide a fluid screen to ventilate or for fluid removal of contaminants.

Antisnoring device:
This subclass is indented under subclass 846. Subject matter wherein the protector prevents mouth breathing or breathing through the mouth and nose which generates a noise caused by soft palate vibration while sleeping.

Drapes:
This s