Manual of U.S. Patent Classification
as of June 30, 2000

Class
034
DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

Patents classified in a subclass may be accessed by clicking on the " " icon following the subclass number, below.

( please note that links to definitions and classified patents may not be available for some classes and subclasses )

For search strategies, please refer to the Classification Index Explanation of Data web page.

Subclass		Title
ClassTitle		===> DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS
245		MATERIAL TREATED BY ELECTROMAGNETIC ENERGY
246		. Electric current applied directly through material
247		. Induction heater
248		. Magnetic field
249		. . Controls particle movement in a fluidized bed
250		. Electrostatic field
251		. . Having suction means
252		. . Having vibration means
253		. . Having needlelike electrodes
254		. . Having heating or cooling means
255		. Radio or high-frequency energy
256		. . Having additional heating means
257		. . Having pressure reducing means
258		. . Plural units or chambers
259		. Microwave energy
260		. . Clothes dryer
261		. . . Having rotating drum
262		. . Having vibrating means
263		. . Having pressure reducing means
264		. . Plural units or chambers
265		. . Having treating gas or vapor circulation
266		. Infrared energy
267		. . Having treating gas or vapor circulation
268		. . Radiation controlled by other drying parameters
269		. . . Having temperature control
270		. . Vehicle paint dryer
271		. . . Including evolved gas or vapor treatment
272		. . . Including vehicle conveyor
273		. . Sheets, webs, or strands
274		. . . Having gas or vapor treatment
275		. Ultraviolet energy
276		. . Inert gas atmosphere
277		. . Having shutter means
278		. . With cooling means
279		MATERIAL TREATED BY ACOUSTIC ENERGY
280		FEATHER TREATING
281		. With agitator
282		PROCESS
283		. Hair on head
284		. Freeze-drying
285		. . With separating of frozen fluid from treated material
286		. . . With gas or vapor flow to remove frozen fluid
287		. . Including vacuum
288		. . . And spray freeze or immersion
289		. . . And heating
290		. . . . Continuous processing
291		. . . . . Including mixing or agitating
292		. . . . . With gas or vapor treating (e.g., filtering or condensing)
293		. . . . With gas or vapor treating
294		. . . . Desiccant or molecular sieve
295		. . . . Including mixing or agitating
296		. . . . Having specific container
297		. . . . Having specific type of material support
298		. . With gas or vapor treating
299		. . . Desiccant or molecular sieve
300		. . . . Using filter
301		. . . With additional material cooling by separate refrigeration means
302		. Congealing or thickening
303		. . By adding congealing or thickening agent
304		. . By cooling of treated material
305		. . By evaporating moisturizing fluid
306		. Sheet or web contact preventing by spacer sheet, web, or strand
307		. Retarding or shielding of treatment
308		. . Radiation applying with shielding
309		. . Shielding by selective application of gas or vapor flow
310		. . Application of temporary coating
311		. . Shielding by use of physical barrier to treating gas or vapor
312		. By centrifugal force
313		. . Continuous processing
314		. . . With centrifugal spraying of the treated material
315		. . . With heating
316		. . . With recirculation of treated material
317		. . With carrier for thin discrete article
318		. . Rotating drum or basket
319		. . . Variable speed
320		. . . With pressurized atmosphere
321		. . . Including heating
322		. . . Foraminous basket
323		. . . . With fluidizing of treated material
324		. . . With inert atmosphere
325		. . With pressurized atmosphere
326		. . Rotating gas or vapor stream
327		. . . With heating
328		. . With additional conveying means
329		. With contacting of material treated with solid or liquid agent
330		. . With regeneration or removal of treating agent
331		. . . Treating agent consists of both solid and liquid
332		. . . Treating agent is a solid
333		. . . . With treating of solid material
334		. . . . With treating of suspension or slurry
335		. . . . Using absorbent band or belt
336		. . . . Using absorbent roller
337		. . . Treating agent is a liquid
338		. . . . With treatment of suspension or slurry
339		. . . . With treatment of solid material
340		. . . . . Treating liquid displaces moisture
341		. . . . . Treating liquid absorbs moisture
342		. . . . . Using multiple treating liquids
343		. . With addition of heat to drying process
344		. . . Treating agent consists of both solid and liquid
345		. . . Treating agent is a solid
346		. . . . Solid treating agent treats same material
347		. . . . Treating of suspension or slurry
348		. . . Treating agent is a liquid
349		. . . . Treating suspension or slurry
350		. . . . Treating solid material
351		. . . . . Treating agent displaces moisture
352		. . . . . Treating agent absorbs moisture
353		. . Solid treating agent treats solid material
354		. . . Using agitation or mixing
355		. . . Using absorbent band or belt
356		. . Solid treating agent treats suspension or slurry
357		. . Liquid treating agent treats solid material
358		. . . Treating agent absorbs moisture
359		. With fluid current conveying or suspension of treated material
360		. . Suspension of treated material
361		. . . Including applying vacuum
362		. . . Including pressurizing atmosphere
363		. . . With additional heat exchange
364		. . . Including gas or vapor flow variation
365		. . . . Pulsed flow
366		. . . Including downward impinging fluid flow
367		. . . With additional conveying
368		. . . Including agitating or comminuting of treated material
369		. . . Including baffle or deflector to adjust material flow
370		. . . With plural treating zones
371		. . . Including material separators or sorters
372		. . Spray drying and cooling of slurry or suspension
373		. . . With contact with additional gas or vapor flow
374		. . . . Additional flow is countercurrent
375		. . Having embedded loop circulation of treated material
376		. With treated material recirculation
377		. . Recirculation of a portion of the treated material
378		. . . With additional treating of recirculated portion (e.g., heating, cooling, separating)
379		. . . Recirculated portion mixed with untreated material
380		. With nondrying treating of material
381		. . Nondrying treating precedes drying
382		. . . Material shaping
383		. . . Puncturing or incising of treated material
384		. . . Grinding or comminuting
385		. . Material shaping
386		. . Mixing or grinding
387		. . Shearing or comminuting
388		. . Compacting or restraining
389		. . Adding of nondrying treating substance
390		. . . Deodorizer
391		. . Cooling of treated material
392		. . . Contacting material with cooling drum or roller
393		. . . Contacting material with cooling fluid
394		. . . . Cooling fluid drawn through material treated
395		. . . . Cooling fluid is ambient air
396		. . . . Treated material is wood
397		. Mechanical liquid removal
398		. . Using compression
399		. . . Expressing liquid by use of roller
400		. . . Expressing liquid by moving treated material through restriction
401		. . Using vibration
402		. Gas or vapor pressure varies during treatment
403		. . Including subatmospheric pressure
404		. . . With addition of treating agent
405		. . Including superatmospheric pressure
406		. Gas or vapor pressure is subatmospheric
407		. . With condensation of vapor
408		. . . With heating
409		. . Including addition of treating agent
410		. . . Treating agent is inert gas
411		. . . Treating agent is steam
412		. . With heating
413		. Gas or vapor pressure is superatmospheric
414		. . Sheet, web, or strand
415		. . Including addition of treating agent
416		. Contacting gas or vapor with solid sorbent to store gas or vapor
417		. With sealing of treating chamber
418		. Diverse types of drying operations
419		. . Sheet, web, or strand
420		. . . Including radiation or convection treatment
421		. . . . Running length
422		. . . Running length
423		. . Sequential drying treatments
424		. . . Of slurry or suspension
425		. . . Using rotating drum
426		. . Plural treatments at same location
427		. Combined
428		. Cooling by gas or vapor contact
429		. . Including conveyor
430		. . . Gas or vapor flow to top and bottom of treated material
431		. . . Gas or vapor flow to bottom of treated material
432		. . . Gas or vapor flow concurrent or countercurrent to treated material flow
433		. . Gas or vapor flow to top and bottom of treated material
434		. . Gas or vapor flow to bottom of treated material
435		. . Gas or vapor flow concurrent or countercurrent to treated material flow
436		. . . Gravity flow of treated material
437		. Treating hollow article
438		. . Having conveyor
439		. . Treating fluid directed to interior and exterior of hollow article
440		. . With specific support for hollow article
441		. . . Support surrounds hollow article
442		. Form-supported treated article
443		. Gas or vapor contact with treated material
444		. . Sheet, web, or strand
445		. . . With drying parameter control
446		. . . . Temperature or moisture control of material treated or treating gas or vapor
447		. . . . Material speed control
448		. . . Vapor or gas treatment
449		. . . . Condensation of gas or vapor
450		. . . . Combustion of gas or vapor
451		. . . Plural treating chambers
452		. . . Gas or vapor drawn through treated material
453		. . . . Using vacuum roller
454		. . . With contact with heat exchanger (e.g., drum or roller)
455		. . . . Pocket ventilator
456		. . . . . Vacuum causes web to contact wire or felt
457		. . . . . With guide roller
458		. . . . With vacuum guide roller
459		. . . Running length of treated material
460		. . . . Gas or vapor suspends treated material
461		. . . . . Gas or vapor directed to opposed surfaces of material
462		. . . . With spacing or coiling
463		. . . . Directing of gas or vapor
464		. . . . . Gas or vapor directed to opposed surfaces of material
465		. . . . . Gas or vapor directed to single surface of material
466		. . . With spacing, coiling, or rolling
467		. . Treatment of gas or vapor
468		. . . Condensation of gas or vapor
469		. . . . Collecting of condensed gas or vapor
470		. . . . . With vaporization of condensed gas or vapor
471		. . . . Regulating temperature of gas or vapor
472		. . . Absorption/adsorption of gas or vapor released from treated material
473		. . . . Regeneration of absorption/adsorption material
474		. . . Gas or vapor humidity regulation
475		. . . . And gas or vapor temperature regulation
476		. . . Gas or vapor temperature regulation
477		. . . . With recirculation of gas or vapor
478		. . . Combustion of gas or vapor
479		. . . . Combusted gas or vapor recirculated to treating chamber
480		. . . Filtering of gas or vapor
481		. . Material thickness controlled
482		. . Material speed or quantity controlled
483		. . . By moisture content of treated material
484		. . . . And temperature of material or chamber
485		. . . By temperature of material or chamber
486		. . Timing of application of gas or vapor to treated material based on drying variables
487		. . Gas or vapor flow directing or control
488		. . . Flow direction changes during treatment
489		. . . . Reversible flow
490		. . . . . Timed control
491		. . . Temperature or moisture content of treated material or chamber controls or directs gas or vapor
492		. . . Gas or vapor flow varied during treatment
493		. . Temperature of treating gas or vapor controlled
494		. . . To prevent damage to material or system
495		. . . Temperature of gas or vapor regulated by other drying variables
496		. . . Multiple temperature levels of gas or vapor
497		. . Temperature of treating chamber regulated
498		. . With treated material motion
499		. . . Rotating drum
500		. . . With conveyor
501		. . . . Gas or vapor directed above and below material
502		. . . . Gas or vapor directed below material
503		. . . Concurrent gas or vapor flow
504		. . . Countercurrent gas or vapor flow
505		. . . . Gravity flow of material
506		. . . Transverse flow of gas or vapor
507		. . Treating gas or vapor drawn through material
508		. . Gas or vapor directed above and below treated material
509		. . Gas or vapor directed below treated material
510		. . Gas or vapor directed above treated material
511		. . Natural ambient air drying of material
512		. . . Solar assisted
513		. . Heat conserving
514		. . . Exhaust gas or vapor from treatment zone heats treating gas or vapor
515		. . . . Heat pump or recompression increases heating effect
516		. . Special gas or vapor
517		. . . Vapor
518		. . Piling or arranging material treated
519		. Conductive heating
520		. . Within drum
521		. . With evolved gas or vapor treatment
522		. Solar drying
523		APPARATUS
524		. With automatic control
525		. . By web breaking
526		. . Of plural operations
527		. . . Of specific operational sequence
528		. . . . Using specific moisture sensor structure
529		. . . . With photoelectric device
530		. . . . With vacuum sensor
531		. . . . With threshold circuit device
532		. . . . . Gaseous tube (e.g., neon)
533		. . . . . Silicon-controlled rectifier (SCR)
534		. . . . With door switch
535		. . . Having two of heater, contacting gas humidity, or gas mixing
536		. . . . With weight measuring means
537		. . . . Having wet bulb and dry bulb thermometers
538		. . . . With means to produce reduced or negative pressure
539		. . . . With fuel burner
540		. . . . Having plural compartments
541		. . . . With delivery nozzle for contacting gas or vapor
542		. . . . With means to increase humidity of contacting gas or vapor
543		. . . With heater
544		. . . . And fire control means
545		. . . . And conveyor
546		. . . . And blower
547		. . . . And drive motor
548		. . Of gas mixing
549		. . Of heater
550		. . . Sensor engages material
551		. . . Having burner control
552		. . . By steam pressure or temperature
553		. . . Electric heater
554		. . . Of heater blower
555		. . . With means to remove excess heat
556		. . . By web or strand tension or breaking
557		. . Of contacting gas humidity
558		. . Of gas or vapor pressure in treating enclosure
559		. . . Subatmospheric pressure
560		. . Of rate of treated material motion
561		. . . Web or strand
562		. . Of time period
563		. . . By timing motor and cam
564		. . . . By plural timers
565		. . Of flow of gas or vapor treating fluid
566		. . . With diverter means to alternate flow paths
567		. . . Exhaust controlled by solvent concentration
568		. . . Steam pressure controlled
569		. . . Of circulation means
570		. . . With flow control valve
571		. . . With flow control dampers at outlet
572		. . Of starting or stopping
573		. . Of treated material feeding or discharging
574		. . . Controlled by weight
575		. . . Controlled by temperature
576		. With fluid current conveying of treated material
577		. . Downward fluid flow impinging solid floor
578		. . Having tubular heat exchanger
579		. . With means to vary gas or vapor flow
580		. . With additional conveying means
581		. . . Suction conveyor
582		. . With specific gas distributor
583		. . . Having angled floor or wall
584		. . . Having thermal expansion adjustment
585		. . . Gas or vapor delivery nozzle
586		. . With means to agitate or comminute material
587		. . Gas or vapor presses material against screen or sieve
588		. . With baffle or deflector to adjust material flow
589		. . With plural treating zones or compartments
590		. . . Serpentine path for material
591		. . With material separator
592		. . . Plural cyclone separators
593		. . With mechanical rotating element
594		. . Using rotary gas current
58		. With apparatus using centrifugal force
59		. . Rotary scattering member
60		. For diverse operations on treated material
61		. . With two or more nondrying means
62		. . With treated material cooling means
63		. . . Internal rotary drum drier
64		. . . Gravity flow-type drier
65		. . . . With integral cooling chamber or section
66		. . . Cooler chamber integral with or similar to drier
67		. . . Atmospheric
68		. . Diverse heater types and/or gas or vapor contact types only
69		. . Diverse types of liquid removers only
70		. . . With expressing or wringing
71		. . . With means to remove liquid from treated material by contact with solids
72		. With means to treat gas or vapor
73		. . By vapor condensation
74		. . . With other gas or vapor treatment
75		. . . Direct contact with cooling substance
76		. . . With forced circulation
77		. . . . Recirculation of treating gas or vapor
78		. . . Recirculation of treating gas or vapor
79		. . Separation of substances from treating or exhaust gases or vapors
80		. . . By absorbent
81		. . . . In or forming walls, ceiling, or floor
82		. . . By filter
83		. . Jet devices
84		. . . Gas or vapor circulators or flow promotors
85		. With apparatus cleaner and/or escaping material collector
86		. With waste gas heat and/or power conservers
87		. With means to interlock operable elements
88		. With display, inspecting, or illuminating means
89		. With indicating or testing means
89.1		. Blotting means combined with means for purpose other than drying
89.2		. . With ruler
90		. Combined
91		. Convertible
92		. Vacuum
93		. Solar
94		. Sheet or web contact preventing by spacer sheets, webs, or strands
95		. Means to remove liquid from treated material by contact with solids
95.1		. . Having manipulative means
95.2		. . . Attachable to hand (e.g., finger)
95.3		. . . For rolling contact
95.4		. . . For rocking contact
96		. For hair on head
97		. . With gas or vapor flow for contact
98		. . . Plural distributors
99		. . . Head conforming distributor
100		. . . . Recirculation of treating gas or vapor
101		. . . With hair supports
102		. Treated material recirculating means
103		. Forms
104		. For hollow article
105		. . With conveying or handling means
106		. . With suspension means and bottom retainer
107		. For slender rigid articles
108		. Rotary drums or receptacles
109		. . Compartmented or pocketed
110		. . External
111		. . . With belt or felt drier
112		. . . With hopper feed or article securing means
113		. . . Plural
114		. . . . Gas or vapor circulation for contact with treated material
115		. . . . . Through material or introduction through drum
116		. . . . With belts or felts
117		. . . . . With threading, stripping, or guiding devices
118		. . . . . Tightener
119		. . . . Heat exchange fluid supply and/or removal
120		. . . . Threading, stripping, or guiding devices
121		. . . . Mounting and/or driving means
122		. . . Gas or vapor circulation for contact with treated material
123		. . . With belts or felts
124		. . . Heat exchange fluid supply and/or removal
125		. . . . Removal only
126		. . With additional translating means
127		. . Plural
128		. . . One within another (e.g., nested)
129		. . . With feed from one to another
130		. . With gas or vapor flow for contact with treated material
131		. . . Recirculation of treating gas or vapor
132		. . . With heating means
595		. . . . With drum or receptacle enclosing housing
596		. . . . . Combined washer-dryer
597		. . . . . With material conditioner dispenser
598		. . . . . And heat retaining material
599		. . . . . And material tumbling assisting means
600		. . . . . And stationary trays in rotatable drum
601		. . . . . And supporting, driving, sealing, or bearing means for drum
602		. . . . . Specific drum structure
603		. . . . . Specific housing structure
604		. . . . . Including gas or vapor circulating means
605		. . . . . . Suction means
606		. . . . . . And gas or vapor flow regulating means
607		. . . . . . And conduit to deliver gas or vapor to drum
608		. . . . . . Vertical gas or vapor flow
609		. . . . . . Axial gas or vapor flow
610		. . . . . . Radial gas or vapor flow
134		. . . . Heat exchange and/or gas or vapor conducting conduits in drum or receptacle
135		. . . Axial treated material feed type
136		. . . . Concurrent gas or vapor flow only
137		. . . . Countercurrent gas or vapor flow only
138		. . . Gas or vapor conducting conduits in drum or receptacle
139		. . . With drum or receptacle enclosing housing
140		. . Vapor exhaust
141		. . . Axial treated material feed type
142		. . Axial treated material feed type
143		. Stationary press type
144		. . Plural press units
145		. . Gas or vapor circulation for contact with treated material
146		. . Nonplanar press couples
147		. Spiral treated material path type
611		. Sheet, web, or strand
612		. . Sheet elevator type
613		. . . Coacting parallel threaded members
614		. . Sheet on edge
615		. . . Stationary support
616		. . . Rotary wheellike conveyor
617		. . . Endless conveyor with fingers
618		. . For flexible sheet, web, or strand
619		. . . Including horizontal support
620		. . . Including roller-type conveyor
621		. . . Including means to suspend work
622		. . . . Portable or collapsible
623		. . . Running length
624		. . . . With contact heater
625		. . . . Winding reel
626		. . . . . With fluent heating means inside reel
627		. . . . Plural webs or strands
628		. . . . . With means to separate individual webs or strands
629		. . . . With gas or vapor circulation for contact with treated material
630		. . . . . Having solvent chamber
631		. . . . . Having means to adjust relative distance between distributor and material
632		. . . . . Having means to produce turbulence in gas or vapor
633		. . . . . Having baffle redirect gas or vapor flow
634		. . . . . Having sealing means
635		. . . . . Including suction means
636		. . . . . Including plural chambers or zones
637		. . . . . Having drive roller
638		. . . . . Including gas or vapor nozzle or distributor outlet
639		. . . . . Having gas or vapor flow transverse to treated material movement
640		. . . . . Fluid current support or guide
641		. . . . . . Having airfoil or Coanda nozzle
642		. . . . . . Having nozzles around circular manifold
643		. . . . . . Having nozzles on opposite sides of web
644		. . . . . . . Adjustable distance between opposed nozzles
645		. . . . . Suspended loops
646		. . . . . Edge holding means
647		. . . . . Zigzag runs of treated material
648		. . . . . . Including material tension adjusting means
649		. . . . . . Including gas or vapor recirculation
650		. . . . . . Including endless conveyors
651		. . . . . . Plural zones or chambers
652		. . . . . Elongated thin gas or vapor stream
653		. . . . . . Including distributor comprising tube with elongated slot
654		. . . . . . Including distributor comprising perforated plate
655		. . . . . . Including distributor having elongated slot
656		. . . . . . . Plural associated elongated slots
657		. . . . Zigzag runs of treated material
658		. . . Endless conveyor or movable gripper
659		. . . . Endless conveyor
660		. . . . . Endless conveyor having material gripper
661		. . . . . Endless conveyor having material hanger
662		. . . . . Plural opposed cooperating endless conveyors
663		. . . . . Endless conveyor contacts solid perforated guide
664		. . . Movable treated material holder
665		. . . . Rotary holder
164		. Treated material vibrating type
165		. Gravity flow type
166		. . Trough or tube, with axially rotary conveyor or agitator
167		. . Plural gravity path, plural feed, and/or discharge
168		. . With gas or vapor flow for contact with treated material
169		. . . Recirculation of treating gas or vapor
170		. . . Inverted imperforate ducts
171		. . . Shelf-to-shelf or zigzag treated material flow
172		. . . . Dumping shelves or pockets
173		. . . . Rotary stirrer or shelf
174		. . . Foraminous distributors or walls
175		. . With venting means or wall
176		. . With treated material tubes
177		. . With heating tubes
178		. . Shelf-to-shelf or zigzag treated material flow
179		. Stationary receptacle or tube with agitator or conveyor
180		. . Plural units
181		. . With gas or vapor flow for contact with treated material
182		. . . Axial treated material feed type
183		. . Axial treated material feed type
184		. Rotary or swinging carrier or rack
185		. . With agitating means or discharging scrapers
186		. . Plural rotary or swinging units
187		. . With gas or vapor circulation for contact with treated material
188		. . . Air scoops and/or suspended treated material supports
189		. Elevator type
190		. . Plural
191		. Reversible or pulsating treating gas or vapor flow
192		. Removable shelf or tray type
193		. . Plural nonvertically aligned
194		. . With shelf or tray handling means
195		. . With gas or vapor circulation for contact with treated material
196		. . . Recirculation of treating gas or vapor
197		. . . With heater
198		. . . . With liquid heater or vaporizer
199		. . . Zigzag treating gas or vapor flow
200		. . With liquid heater or vaporizer
201		. Houses, kilns, and containers
666		. . Car dryer
202		. . Article inserted type
203		. . With conveyors providing plural or zigzag treated material paths
204		. . . Separable truck or tray
205		. . . Plural independent paths for treated material
206		. . . Pusher type
207		. . . Plural run endless conveyor
208		. . . Single run endless, both courses carrying treated material
209		. . Plural treating units or compartments
210		. . . With gas or vapor circulation for contact with treated material
211		. . . . Superposed floors or chambers
212		. . . . Recirculation of treating gas or vapor
213		. . . . . Parallel circulation only
214		. . . . Parallel circulation only
215		. . . . With heater
216		. . . . . With conveyor and/or movable treated material support
217		. . . . With conveyor and/or movable treated material support
218		. . With gas or vapor circulation for contact with treated material
219		. . . Recirculation of treating gas or vapor
220		. . . . Caused by heater action only
221		. . . . Caused by jet action
222		. . . . Movable gas or vapor distributor
223		. . . . Plural gas or vapor forcing means
224		. . . . Plural gas or vapor inlets and/or outlets
225		. . . . . In wall, ceiling, or floor
226		. . . Tortuous gas or vapor path
227		. . . Gas or vapor flow toward or from treated material entrance or exit
228		. . . . Countercurrent to treated material motion only
229		. . . Movable gas or vapor distributor
230		. . . Plural gas or vapor forcing means
231		. . . Deflecting baffle in treating chamber
232		. . . Plural gas or vapor inlets and/or outlets
233		. . . . In wall, ceiling, or floor
234		. . . Caused by heater only
235		. . With venting means
236		. Treated material handling or conveying
237		. Trays or floors
238		. . Single or plural trays only
239		. Supports
240		. . Rods or rolls
241		. Gas or vapor distributing and applying agitators
242		. Chamber seals
667		. Debris guard
		******************************
		DIGEST
		******************************
DIG 1		Absorbents and adsorbents

Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

---

Last Modified: 6 October 2000