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 Class   250RADIANT ENERGY
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  250           RADIO AND MICROWAVE ABSORPTION WAVEMETERS
  251           ELECTRICALLY NEUTRAL MOLECULAR OR ATOMIC BEAM DEVICES AND METHODS
  252.1           CALIBRATION OR STANDARDIZATION METHODS
  253           GEOLOGICAL TESTING OR IRRADIATION
  254           . (1 indent ) With drill or drilling
  255           . (1 indent ) With sampling
  256           . (1 indent ) Well testing apparatus and methods
  257           .. (2 indent ) With casing collar detection
  258           .. (2 indent ) By interface of fluids
  259           .. (2 indent ) With placement of tracer in or about well
  260           ... (3 indent ) Tracer being or including radioactive material
  261           .. (2 indent ) With detector or detector circuit control
  262           .. (2 indent ) With particular detector signal circuit
  263           ... (3 indent ) With detector signal modulation or carrier wave
  264           ... (3 indent ) Having plural detectors
  267           .. (2 indent ) With radiation control to detector
  268           .. (2 indent ) With well-engaging means
  269.1           .. (2 indent ) With source and detector
  269.2           ... (3 indent ) With plural types of detectors
  269.3           ... (3 indent ) Having gamma source and gamma detector
  269.4           ... (3 indent ) Having neutron source and neutron detector
  269.5           .... (4 indent ) Having thermal neutron detector
  269.6           ... (3 indent ) Having neutron source and gamma detector
  269.7           .... (4 indent ) With plural gamma detectors
  269.8           .... (4 indent ) With detection in plural consecutive time intervals
  265           .. (2 indent ) Plural detectors
  266           ... (3 indent ) With spacing or direction of detectors
  271           CODED RECORD AND READERS; INVISIBLE RADIANT ENERGY TYPE
  281           IONIC SEPARATION OR ANALYSIS
  282           . (1 indent ) Methods
  283           .. (2 indent ) With collection of ions
  284           ... (3 indent ) For material recovery
  285           . (1 indent ) With plural, simultaneous ion generators
  286           . (1 indent ) Ion beam pulsing means with detector synchronizing means
  287           .. (2 indent ) With time-of-flight indicator
  288           . (1 indent ) With sample supply means
  289           . (1 indent ) With evacuation or sealing means
  290           . (1 indent ) Cyclically varying ion selecting field means
  291           .. (2 indent ) Circular ion path
  292           .. (2 indent ) Laterally resonant ion path
  293           .. (2 indent ) Alternating field ion selecting means
  294           . (1 indent ) Static field-type ion path-bending selecting means
  295           .. (2 indent ) With variable beam shifting field means
  296           .. (2 indent ) Plural diverse-type static path-bending fields
  297           ... (3 indent ) For causing complex ion path
  298           .. (2 indent ) Magnetic field path-bending means
  299           ... (3 indent ) With detector
  300           .... (4 indent ) With detector control or regulating
  301           METHODS OF DETERMINING OIL PRESENCE, CONTAMINATION OR CONCENTRATION
  302           RADIATION TRACER METHODS
  303           . (1 indent ) Radioactive tracer methods
  304           METHODS INCLUDING SEPARATION OR NONRADIANT TREATMENT OF TEST MATERIALS
  305           ELECTRON ENERGY ANALYSIS
  306           INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES
  307           . (1 indent ) Methods
  308           . (1 indent ) Including a radioactive source
  309           . (1 indent ) Positive ion probe or microscope type
  310           . (1 indent ) Electron probe type
  311           . (1 indent ) Electron microscope type
  440.11           . (1 indent ) Analyte supports
  441.11           .. (2 indent ) With air lock or evacuation means
  442.11           .. (2 indent ) With object moving or positioning means
  443.1           .. (2 indent ) With heat transfer or temperature-indication means
  315.3           SOURCE WITH CHARGED PLATE-TYPE DETECTOR
  316.1           WITH INFRARED OR THERMAL PATTERN RECORDING
  317.1           . (1 indent ) Thermal copying of documents
  318           .. (2 indent ) With image transfer device
  319           .. (2 indent ) With conveying means
  324           CORONA IRRADIATION
  325           . (1 indent ) Charging of moving object
  326           . (1 indent ) Charging of objects
  580           SOURCE WITH RECORDING DETECTOR
  581           . (1 indent ) Using a stimulable phosphor
  582           .. (2 indent ) With image recording
  583           ... (3 indent ) For specialized application
  584           .. (2 indent ) With image read-out
  585           ... (3 indent ) Including stimulation
  586           ... (3 indent ) Including emission detection
  587           .... (4 indent ) With adjustment of conditions
  588           .. (2 indent ) With erasure
  589           .. (2 indent ) With conveyance
  590           ... (3 indent ) With a recirculation path
  591           . (1 indent ) Including a light beam read-out
  328           AUTOMATIC/SERIAL DETECTION OF SIMILAR SOURCES
  329           RECORD PROJECTORS
  330           INFRARED-TO-VISIBLE IMAGING
  331           . (1 indent ) Including liquid crystal detector
  332           . (1 indent ) Including detector array
  333           . (1 indent ) Including image tube-type detector
  334           . (1 indent ) Including means for scanning field of view
  335           CLOUD OR BUBBLE CHAMBERS
  336.1           INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING
  336.2           . (1 indent ) Superconducting type
  337           . (1 indent ) With heating of luminophors
  338.1           . (1 indent ) Infrared responsive
  338.2           .. (2 indent ) Ferroelectric, ferromagnetic, photomagnetic types
  338.3           .. (2 indent ) Pyroelectric type
  338.4           .. (2 indent ) Semiconducting type
  338.5           .. (2 indent ) With means to analyze uncontained fluent material
  339.01           .. (2 indent ) With selection of plural discrete wavelengths or bands
  339.02           ... (3 indent ) Including detector array
  339.03           ... (3 indent ) Including temperature control means
  339.04           ... (3 indent ) Including temperature determining means
  339.05           ... (3 indent ) With additional noninfrared wavelengths
  339.06           ... (3 indent ) With radiation source
  339.07           .... (4 indent ) Including spectrometer or spectrophotometer
  339.08           .... (5 indent ) Including Fourier transform infrared spectrometry
  339.09           .... (4 indent ) With calibration steps in measurement process
  339.1           .... (4 indent ) Determining moisture content
  339.11           .... (4 indent ) Measuring infrared radiation reflected from sample
  339.12           .... (4 indent ) Using sample absorption for chemical composition analysis
  339.13           .... (5 indent ) With gaseous sample
  339.14           ... (3 indent ) Detecting infrared emissive objects
  339.15           .... (4 indent ) Sensing flame or explosion
  340           .. (2 indent ) Methods
  341.1           ... (3 indent ) With irradiation or heating of object or material
  341.2           .... (4 indent ) Including probe
  341.3           .... (4 indent ) Including polarizing means
  341.4           .... (4 indent ) With semiconductor sample
  341.5           .... (4 indent ) With calibration
  341.6           .... (4 indent ) Heating of object or material
  341.7           .... (4 indent ) With multiple sources
  341.8           .... (4 indent ) Measuring infrared radiation reflected from sample
  342           ... (3 indent ) Locating infrared emissive objects
  343           .. (2 indent ) With means to transmission-test contained fluent material
  344           ... (3 indent ) Plural series signalling means
  345           ... (3 indent ) Plural beam/detector pairs
  346           .... (4 indent ) Plural temperature sensitive signalling means
  347           .. (2 indent ) With movable beam deflector or focussing means
  348           ... (3 indent ) Controlled by signalling means
  349           .. (2 indent ) Plural signalling means
  350           ... (3 indent ) With periodic beam varying means
  351           .. (2 indent ) With periodic beam varying means
  352           .. (2 indent ) With temperature modifying means
  353           .. (2 indent ) With beam deflector or focussing means
  354.1           . (1 indent ) Signalling means controls incident radiation
  356.1           . (1 indent ) Flow metering
  356.2           .. (2 indent ) Using radioactive tracer
  357.1           . (1 indent ) Fluent material level signalling
  358.1           . (1 indent ) With means to inspect passive solid objects
  359.1           .. (2 indent ) Rectilinearly moving object
  360.1           .. (2 indent ) With relative movement means
  361R           . (1 indent ) With or including a luminophor
  362           .. (2 indent ) Methods
  363.01           .. (2 indent ) With radiant energy source
  363.02           ... (3 indent ) Body scanner or camera
  363.03           .... (4 indent ) With positron source
  363.04           .... (4 indent ) Emission tomography
  363.05           .... (5 indent ) With detector support
  363.06           .... (4 indent ) Using coded aperture
  363.07           .... (4 indent ) With distortion correction
  363.08           .... (4 indent ) With detector support
  363.09           .... (4 indent ) With calibration
  363.1           .... (4 indent ) With a collimator
  364           ... (3 indent ) With fluent source handling or collecting means
  365           ... (3 indent ) Ultraviolet light source
  366           .. (2 indent ) Plural electric signalling means
  367           .. (2 indent ) Plural or composite luminophor
  368           .. (2 indent ) With optics
  369           .. (2 indent ) With output system
  361C           .. (2 indent ) Chemiluminescent detection
  370.01           . (1 indent ) Semiconductor system
  370.02           .. (2 indent ) Alpha particle detection system
  370.03           .. (2 indent ) Fission fragment/fissionable isotope detection system
  370.04           .. (2 indent ) Self-powered system
  370.05           .. (2 indent ) Neutron detection system
  370.06           .. (2 indent ) Discrimination-type system
  370.07           .. (2 indent ) Dose or dose rate measurement
  370.08           .. (2 indent ) Imaging system
  370.09           ... (3 indent ) X-ray or gamma-ray system
  370.1           .. (2 indent ) Position sensitive detection system
  370.11           .. (2 indent ) Scintillation system
  370.12           .. (2 indent ) Of material other than germanium, diamond, or silicon
  370.13           ... (3 indent ) Containing cadmium telluride
  370.14           .. (2 indent ) Particular detection structure (e.g., MOS, PIN)
  370.15           .. (2 indent ) Temperature control or compensation system
  371           .. (2 indent ) Methods
  372           . (1 indent ) Ultraviolet light responsive means
  373           .. (2 indent ) With means to transmission-test contained fluent material
  374           . (1 indent ) Including a radiant energy responsive gas discharge device
  375           .. (2 indent ) Methods
  376           .. (2 indent ) With electroscopic indicators
  377           ... (3 indent ) With charge generator
  378           ... (3 indent ) With charge storage means
  379           .. (2 indent ) With means to supply the gas
  380           ... (3 indent ) Radioactive gas, or with gas-borne radioactive material
  381           ... (3 indent ) With radioactive source
  382           .. (2 indent ) With means to ionize the gas
  383           ... (3 indent ) Emissive fluent type, or with transmissive fluent material
  384           ... (3 indent ) Radioactive
  385.1           .. (2 indent ) Plural chambers or three or more electrodes
  385.2           ... (3 indent ) Spark chambers
  386           .. (2 indent ) With a periodic electrode bias varying means
  387           .. (2 indent ) With periodic electrode bias supply
  388           .. (2 indent ) With indicator
  389           . (1 indent ) Including ionization means
  390.01           . (1 indent ) Neutron responsive means
  390.02           .. (2 indent ) Radiographic analysis
  390.03           .. (2 indent ) With dose measurement
  390.04           .. (2 indent ) Composition analysis
  390.05           ... (3 indent ) For moisture content
  390.06           .. (2 indent ) Density/thickness/consistency analysis
  390.07           .. (2 indent ) Spectrum analysis
  390.08           ... (3 indent ) Using time-of-flight spectrometers
  390.09           ... (3 indent ) Using diffractometers
  390.1           .. (2 indent ) Including beam control
  390.11           .. (2 indent ) Including a scintillator
  390.12           .. (2 indent ) Position-sensitive
  391           .. (2 indent ) Methods
  392           .. (2 indent ) With indicating or recording means
  393           . (1 indent ) With radiant energy source
  394           . (1 indent ) Plural signalling means
  395           . (1 indent ) Methods
  200           PHOTOCELLS; CIRCUITS AND APPARATUS
  201.1           . (1 indent ) Photocell controls its own optical systems
  201.2           .. (2 indent ) Automatic focus control
  201.3           ... (3 indent ) Of a microscope
  201.4           ... (3 indent ) Active autofocus
  201.5           .... (4 indent ) With optical storage medium; e.g., optical disc, etc.
  201.6           ... (3 indent ) Based on triangulation
  201.7           ... (3 indent ) Based on contrast
  201.8           ... (3 indent ) Based on image shift
  201.9           .. (2 indent ) Light beam wavefront phase adaptation
  203.1           .. (2 indent ) Following a target (e.g., a star or instrument pointer or other object) other than a pattern
  203.2           ... (3 indent ) Target illuminated by artificial light source
  203.3           ... (3 indent ) Self-luminous target
  203.4           .... (4 indent ) Sun
  203.5           .... (4 indent ) Cathode-ray tube scanning
  203.6           .... (4 indent ) Airborne target, or spaceborne target other than the sun (e.g., star or missile)
  203.7           .... (4 indent ) With moving reticle in optical path
  202           .. (2 indent ) Following a pattern (e.g., line or edge)
  548           .. (2 indent ) Controlling web, strand, strip, or sheet
  549           .. (2 indent ) Cathode-ray tube
  204           .. (2 indent ) Adjusting optical system to balance brightness in plural paths
  205           .. (2 indent ) Controlling light source intensity
  550           . (1 indent ) Interference pattern analysis (e.g., spatial filtering or holography)
  551           . (1 indent ) Signal isolator
  552           . (1 indent ) Solid state light source
  553           .. (2 indent ) Array or matrix
  554           . (1 indent ) Flame light source
  559.01           . (1 indent ) With circuit for evaluating a web, strand, strip, or sheet
  559.02           .. (2 indent ) Evaluation of photographic film
  559.03           .. (2 indent ) Sequential detector arrangement
  559.04           .. (2 indent ) Evaluation by regions, zones, or pixels
  559.05           ... (3 indent ) With imaging
  559.06           ... (3 indent ) With scanning
  559.07           .. (2 indent ) With imaging
  559.08           ... (3 indent ) With camera
  559.09           .. (2 indent ) With polarization
  559.1           .. (2 indent ) With calibration
  559.11           .. (2 indent ) Detection of both reflected and transmitted light
  559.12           .. (2 indent ) Beam interruption or shadow
  559.13           ... (3 indent ) With laser source
  559.14           ... (3 indent ) With rotation of material
  559.15           ... (3 indent ) With plural detectors
  559.16           .. (2 indent ) Detection of diffuse light
  559.17           ... (3 indent ) With diffusion optics
  559.18           ... (3 indent ) With discrimination of discrete light diffusing region
  559.19           .. (2 indent ) Measuring dimensions
  559.2           ... (3 indent ) With comparison to reference or standard
  559.21           ... (3 indent ) Volume
  559.22           ... (3 indent ) Profile
  559.23           .... (4 indent ) With triangulation
  559.24           ... (3 indent ) Transversal measurement (e.g., width, diameter, cross-sectional area)
  559.25           .... (4 indent ) Lumber
  559.26           ... (3 indent ) Longitudinal measurement (e.g., length or spacing)
  559.27           ... (3 indent ) Thickness
  559.28           .... (4 indent ) With translucent material
  559.29           .. (2 indent ) Measuring position
  559.3           ... (3 indent ) With alignment detection
  559.31           ... (3 indent ) With triangulation
  559.32           ... (3 indent ) Measuring rate of motion or flow (change of position)
  559.33           ... (3 indent ) With robotics
  559.34           ... (3 indent ) Lead or wire bond inspection
  559.35           ... (3 indent ) Centroid
  559.36           ... (3 indent ) Edge
  559.37           ... (3 indent ) Angular orientation (e.g., skew)
  559.38           ... (3 indent ) Determining range from detector
  559.39           .. (2 indent ) With comparison to reference or standard
  559.4           .. (2 indent ) With indication of presence of material or feature
  559.41           ... (3 indent ) With foreign particle discrimination circuitry
  559.42           ... (3 indent ) Discontinuity detection (e.g., hole, crack)
  559.43           ... (3 indent ) Break detection
  559.44           ... (3 indent ) Identifying marking, pattern, or indicia
  559.45           ... (3 indent ) With defect discrimination circuitry
  559.46           .... (4 indent ) With camera or plural detectors
  559.47           .... (4 indent ) With counting means
  559.48           .... (4 indent ) With transversal scan
  559.49           .... (5 indent ) With moving reflector
  206           . (1 indent ) Photocell controlled circuit
  206.1           .. (2 indent ) Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors
  206.2           ... (3 indent ) Detection of positional information in two or more planes (e.g., azimuth and elevation; hour angle and declination)
  206.3           .... (4 indent ) With moving reticle in optical path
  555           .. (2 indent ) Including coded record
  556           ... (3 indent ) Document verification or graph reader
  557           ... (3 indent ) With means to position, direct, or detect record
  558           .. (2 indent ) Stereoplotters
  564           .. (2 indent ) With circuit for evaluating a fluent material
  565           ... (3 indent ) With comparison
  207           .. (2 indent ) Electron multiplier
  208.1           .. (2 indent ) Plural photosensitive image detecting element arrays
  208.2           .. (2 indent ) Plural photosensitive nonimage detecting elements
  208.3           ... (3 indent ) With electronic scanning
  208.4           ... (3 indent ) Used to switch an electrical circuit or device on or off
  208.5           ... (3 indent ) With photodetector output ratioing other than by bridge or push-pull circuits
  208.6           ... (3 indent ) With specific relative positional geometry of photosensitive elements (e.g., an annular photosensitive element surrounding a coaxially mounted photosensitive element)
  210           .. (2 indent ) Bridge and push-pull circuits
  214R           .. (2 indent ) Special photocell or electron tube circuits
  214P           ... (3 indent ) Photographic control
  214D           ... (3 indent ) Light dimmers
  214A           ... (3 indent ) Amplifier type
  214LA           .... (4 indent ) Light amplifier type
  214LS           .... (5 indent ) Switching type
  214VT           .... (5 indent ) Vacuum tube type
  214PR           ... (3 indent ) Photosensitive rheostat type
  214SG           ... (3 indent ) Self-generating type
  214.1           ... (3 indent ) Special photocell
  214AG           ... (3 indent ) Automatic gain control
  214AL           ... (3 indent ) Ambient light responsive
  214B           ... (3 indent ) Ambient light desensitizing means
  214C           ... (3 indent ) Compensation
  214DC           ... (3 indent ) Digital circuitry
  214L           ... (3 indent ) Logarithmic/linear signal
  214RC           ... (3 indent ) Rate of change
  214SF           ... (3 indent ) Slave flash
  214SW           ... (3 indent ) Electronic switch
  215           . (1 indent ) Combined with diverse-type device
  216           . (1 indent ) Optical or pre-photocell system
  227.11           .. (2 indent ) Light conductor
  227.12           ... (3 indent ) Optical delay line
  227.13           ... (3 indent ) Light pen
  227.14           ... (3 indent ) Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell)
  227.15           .... (4 indent ) With detection of macroscopic break in fiber
  227.16           .... (4 indent ) With detection of fiber microbend caused by parameter affecting fiber
  227.17           .... (4 indent ) Causing polarization change in fiber
  227.18           .... (4 indent ) Causing light spectral frequency/wavelength change
  227.19           .... (4 indent ) With coherent interferrometric light
  227.2           ... (3 indent ) With imaging
  227.21           ... (3 indent ) With light chopping or modulation
  227.22           .... (4 indent ) Keyboard or other manual switch controlled
  227.23           ... (3 indent ) With spectral frequency/wavelength discrimination
  227.24           ... (3 indent ) With coupling enhancement means
  227.25           .... (4 indent ) Fluid coupling
  227.26           ... (3 indent ) With scanning
  227.27           ... (3 indent ) With coherent interferrometric light
  227.28           ... (3 indent ) With specific configuration of light conductor components with respect to each other
  227.29           ... (3 indent ) With specific illumination or viewing orientation of light conductor relative to viewed object (e.g., light normal to, and detector at 45 degree angle to, viewed object)
  227.3           ... (3 indent ) With variable orientation of light conductor relative to viewed object (e.g., goniometer)
  227.31           ... (3 indent ) Side or edge illuminated light conductor or collector
  227.32           ... (3 indent ) End illuminated light conductor with noncircular geometric cross section
  566           .. (2 indent ) Including coded record
  568           ... (3 indent ) Digital information
  569           .... (4 indent ) Card type
  570           .... (4 indent ) Tape, drum, or disc types
  573           .. (2 indent ) Fluent material in optical path
  574           ... (3 indent ) Scattered or reflected light
  575           ... (3 indent ) Plural paths
  576           ... (3 indent ) Sample holder or supply
  577           ... (3 indent ) Volume or level
  221           .. (2 indent ) Controlled by article, person, or animal
  222.1           ... (3 indent ) Inanimate article
  222.2           .... (4 indent ) Particle detection
  223R           .... (4 indent ) Conveyor or chute
  223B           .... (5 indent ) Bottles
  224           .... (4 indent ) Article and light ray relatively moved during sensing
  225           .. (2 indent ) Polarizing
  226           .. (2 indent ) Color (e.g., filter or spectroscope)
  228           .. (2 indent ) Integrating sphere
  229           .. (2 indent ) Light valve (e.g., iris diaphragm)
  231.1           ... (3 indent ) Actuated by dynamic external physical quantity
  231.11           .... (4 indent ) Actuated by gauge element deflection
  231.12           .... (4 indent ) Gyroscopes
  231.13           .... (4 indent ) Shaft angle transducers
  231.14           .... (5 indent ) Incremental shaft readers; i.e., with means to generate increments of angular shaft rotation
  231.15           ..... (6 indent ) With plural gear driven discs
  231.16           ..... (6 indent ) Using phase difference of output signals from plural photodetectors
  231.17           ..... (6 indent ) With means to indicate a complete shaft rotation
  231.18           ..... (6 indent ) Position indicating shaft encoders with means to generate a unique signal for each specific angular shaft position
  231.19           .... (4 indent ) Pressure-responsive light valves
  230           ... (3 indent ) Reflection type(e.g., mirror galvanometer)
  232           ... (3 indent ) Light chopper type
  233           .... (4 indent ) Rotary
  578.1           .. (2 indent ) Plural light sources or optical paths
  234           .. (2 indent ) Means for moving optical system
  235           ... (3 indent ) Repetitious path
  236           .... (4 indent ) Rotary motion
  237R           .. (2 indent ) Hoods, grating, baffles, diaphragms, masks
  237G           ... (3 indent ) Gratings (moire fringes)
  238           . (1 indent ) Temperature control of photocell
  239           . (1 indent ) Housings (in addition to cell casing)
  396R           WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING
  397           . (1 indent ) With detector
  398           . (1 indent ) With target means
  399           .. (2 indent ) Secondary emissive type
  400           .. (2 indent ) With means to convey or guide the target
  396ML           . (1 indent ) Magnetic lens
  423R           ION GENERATION
  424           . (1 indent ) Methods
  425           . (1 indent ) With sample vaporizing means
  426           . (1 indent ) Arc type
  427           . (1 indent ) Electron bombardment type
  423P           . (1 indent ) Photoionization type
  423F           . (1 indent ) Field ionization type
  428           FLUENT MATERIAL CONTAINMENT, SUPPORT OR TRANSFER MEANS
  429           . (1 indent ) With temperature control
  430           . (1 indent ) With valve or pump actuator
  431           . (1 indent ) With cleaning means
  432R           . (1 indent ) With irradiating source or radiating fluent material
  433           .. (2 indent ) Including a movable surface transfer means
  434           .. (2 indent ) Including a gravity-type transfer means
  435           .. (2 indent ) Including a flowthrough transfer means
  436           ... (3 indent ) Flow-enclosed radiation source
  437           ... (3 indent ) Tortuous path type
  438           ... (3 indent ) With a flow-modifying surface
  432PD           .. (2 indent ) Parent-daughter isotope separators
  453.11           SUPPORTED FOR NONSIGNALLING OBJECTS OF IRRADIATION (E.G., WITH CONVEYOR MEANS)
  454.11           . (1 indent ) With source support
  455.11           .. (2 indent ) Source and object encasement (e.g., sterilizers)
  458.1           LUMINOPHOR IRRADIATION
  459.1           . (1 indent ) Methods
  461.1           . (1 indent ) With ultraviolet source
  461.2           .. (2 indent ) Biological cell identification
  462.1           . (1 indent ) Self-luminous article
  463.1           .. (2 indent ) Dials, pointers, gauges, and bands
  464.1           .. (2 indent ) Pendants
  465.1           .. (2 indent ) Manual operators or luminous attachments therefor
  466.1           .. (2 indent ) Covers, keys, or luminous attachments therefor
  467.1           .. (2 indent ) Reticles, gun sights or with optical element
  472.1           INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING
  473.1           . (1 indent ) Methods
  474.1           . (1 indent ) Optical change type
  475.2           . (1 indent ) Photographic type
  482.1           .. (2 indent ) With radiation filter, modifier, or shield (e.g., dosimeter badges)
  483.1           . (1 indent ) Luminescent device
  484.2           .. (2 indent ) Requiring an additional energy source to cause luminescence
  484.3           ... (3 indent ) With thermally-stimulated phosphor
  484.4           ... (3 indent ) With optically-stimulated phosphor
  484.5           .... (4 indent ) Dosimeter
  485.1           .. (2 indent ) With light excluding casing having an aperture
  486.1           .. (2 indent ) With plural luminescent material or plural luminescent containing layers or areas
  487.1           .. (2 indent ) With optical member of material to directly modify luminous energy
  488.1           ... (3 indent ) Plural planar layer type
  489           ION COLLECTORS
  491.1           MEANS TO ALIGN OR POSITION AN OBJECT RELATIVE TO A SOURCE OR DETECTOR
  492.1           IRRADIATION OF OBJECTS OR MATERIAL
  492.2           . (1 indent ) Irradiation of semiconductor devices
  492.21           .. (2 indent ) Ion bombardment
  492.22           .. (2 indent ) Pattern control
  492.23           .. (2 indent ) Variable beam
  492.24           .. (2 indent ) Photocathode projection
  492.3           . (1 indent ) Ion or electron beam irradiation
  493.1           RADIANT ENERGY GENERATION AND SOURCES
  494.1           . (1 indent ) Plural radiation sources
  495.1           .. (2 indent ) Including an infrared source
  496.1           . (1 indent ) With container for radioactive source and radiation directing or selectable shielding
  497.1           .. (2 indent ) With means to move source between shielded and unshielded position
  498.1           .. (2 indent ) With pivoted or rotatable radiation shield
  503.1           . (1 indent ) With radiation modifying member
  504R           .. (2 indent ) Ultraviolet or infrared source
  504H           ... (3 indent ) Hand-held
  505.1           RADIATION CONTROLLING MEANS
  506.1           . (1 indent ) Shielded receptacles for radioactive sources
  507.1           .. (2 indent ) Having plural storage compartments or plural nested receptacles
  515.1           . (1 indent ) Shields
  516.1           .. (2 indent ) Garments
  517.1           .. (2 indent ) Construction elements or building parts
  518.1           .. (2 indent ) With neutron absorption material
  519.1           .. (2 indent ) Flexible
  522.1           SOURCE SUPPORTS
  526           MISCELLANEOUS
 
 CROSS-REFERENCE ART COLLECTIONS
 
  900           OPTICAL LIQUID LEVEL SENSORS
  901           . (1 indent ) With gap between light guide elements (includes open light path preset)
  902           .. (2 indent ) With closed light path preset
  903           ... (3 indent ) With prism contacting liquid
  904           . (1 indent ) With single light guide element to guide light in a continuous path
  905           .. (2 indent ) With longitudinal irregularity
  906           ... (3 indent ) With large scale longitudinal bend
  907           ... (3 indent ) With portions of light guide coating or cladding removed
  908           ... (3 indent ) With waveguide twisted about its longitudinal axis
  909           METHODS AND APPARATUS ANCILLARY TO STIMULABLE PHOSPHOR SYSTEMS
  910           FOOD SAMPLE ANALYSIS USING INVISIBLE RADIANT ENERGY SOURCE
 
 FOREIGN ART COLLECTIONS
 
  FOR000           CLASS-RELATED FOREIGN DOCUMENTS
 
 DIGESTS
 
   DIG1           PASSIVE INTRUSION DETECTORS
   DIG2           RADON DETECTION


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This data is current as of June/2006