U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
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Index to the U.S. Patent Classification System
Entries as of June 30, 2000

[Explanation of Data]
Links to Other Index Entries Beginning With:
A B C Co D E F G H I J K L M N O P Q R S Sp T U V W X Y Z

Index Entries Beginning With " Q "


The Manual of U.S. Patent Classification may be accessed by clicking on the classification, below.
( please note that links for some subclasses may not be available )
--------------------------------------------------------------

Class / Subclass - - - - Index Term

000 / ________ - - - - QUADRANT
000 / ________ - - - - . . ANGLE MEASUREMENT
033 / 281_____ - - - - . . . . . HORIZONTAL AND VERTICAL ANGLES
033 / 285_____ - - - - . . . . . HORIZONTAL ANGLE
033 / 282____+ - - - - . . . . . VERTICAL ANGLE
057 / 322____+ - - - - . . SPINNING MULE
381 / 19_____+ - - - - QUADRASONIC
370 / 273____+ - - - - QUADRUPLEX TELEGRAPHY
299 / 15______ - - - - QUARRYING
333 / 27______ - - - - QUARTER WAVE TRANSMISSION LINE
036 / 48_____+ - - - - QUARTERS SHOE BLANK
000 / ________ - - - - QUARTZ (SEE PIEZOCRYSTALS)
065 / ________ - - - - . . GLASS MANUFACTURING
501 / 27_____+ - - - - . . . . . COMPOSITIONS
313 / 112_____ - - - - . . LAMPS
313 / 112_____ - - - - . . . . . MERCURY VAPOR
564 / 281_____ - - - - QUATERNARY AMMONIUM
564 / 291____+ - - - - . . ACYCLIC
564 / 282____+ - - - - . . AROMATIC
534 / 603____+ - - - - . . AZO COMPOUND CTG
560 / 68_____+ - - - - QUEBRACHO EXTRACT
510 / 249____+ - - - - . . DESCALING AGENT CONTAINING
008 / 94.32___ .- - - - . . TANNING WITH
008 / 94.3____ .- - - - . . . . . ALUMINUM COMPOUND CONTAINING
449 / 28______ - - - - QUEEN BEE CELLS AND CAGES
000 / ________ - - - - QUENCHERS AND QUENCHING
427 / 398.3___ .- - - - . . COATING COOLING
239 / 750____+ - - - - . . COKE QUENCHERS
201 / 39______ - - - - . . DISTILLATION RESIDUES
202 / 95______ - - - - . . . . . AUTOTHERMIC SYSTEMS
202 / 227____+ - - - - . . . . . THERMOLYTIC APPARATUS
148 / _______+ - - - - . . METAL HEAT TREATMENT PROCESES
266 / 114____+ - - - - . . METAL HEATING AND QUENCHING
266 / 121____+ - - - - . . . . . APPARATUS
266 / 114____+ - - - - . . METAL QUENCHING APPARATUS
202 / 253_____ - - - - . . STILL BOTTOM CLOSURES
434 / 322____+ - - - - QUESTION AND ANSWER
434 / 327____+ - - - - . . CORRECT ANSWER INDICATED
434 / 362_____ - - - - . . ELECTRICAL RECORDING MEANS
434 / 363_____ - - - - . . EXAMINATION CARD OR SHEET
434 / 353____+ - - - - . . GRADING OF RESPONSE FORM
434 / 350____+ - - - - . . RESPONSES ELECTRICALLY COMMUNICATE
434 / 350____+ - - - - . . . . . TO MONITOR OR RECORDER
000 / ________ - - - - QUICK ACTING
000 / ________ - - - - . . FLUID PRESSURE BRAKE SYSTEMS
303 / 37_____+ - - - - . . . . . AUTOMATIC SYNCHRONIZING
303 / 69______ - - - - . . . . . MOTOR RELEASING
089 / 125____+ - - - - . . GUNS
000 / ________ - - - - . . PORTABLE WOOD WORKING CLAMPS
269 / 140____+ - - - - . . . . . PARALLEL SCREW
269 / ________ - - - - . . . . . U BEAM
408 / 72R____+ - - - - . . QUICK SETTING PORTABLE RAIL DRILLS
242 / 31______ - - - - . . QUICK TRAVERSE BOBBIN AND COP
242 / 31______ - - - - . . . . . CONE
242 / 43R_____ - - - - . . . . . WINDING
191 / 63.1____ .- - - - . . QUICK WHEEL RELEASE TROLLEY HEADS
000 / ________ - - - - QUICK DETACHABLE
439 / 180_____ - - - - . . ELECTRIC CONNECTORS
172 / 749____+ - - - - . . PLOW ELEMENTS
464 / 901____* - - - - . . SHAFT COUPLING
000 / ________ - - - - QUICKSILVER (SEE MERCURY)
057 / 4_______ - - - - QUILLSTOCK SPINNING
112 / 117____+ - - - - QUILTING
038 / 102.21_+ .- - - - . . FRAMES WITH CLOTH WINDING MEANS
005 / 482____+ - - - - QUILTS
D06 / 603____+ - - - - . . DESIGN
D06 / 595_____ - - - - . . . . . BEDDING PER SE
546 / 181_____ - - - - QUINALDINE
544 / 283____+ - - - - QUINAZOLINES
552 / 293_____ - - - - QUINHYDRONES
562 / 508_____ - - - - QUINIC ACID
514 / 314_____ - - - - QUINICINE, IN DRUG
514 / 305_____ - - - - QUINIDINE, IN DRUG
546 / 134_____ - - - - QUININE
514 / 305_____ - - - - . . IN DRUG
552 / 262_____ - - - - QUINIZARIN
546 / 152____+ - - - - QUINOLINE
534 / 770____+ - - - - . . AZO COMPOUNDS
546 / 182_____ - - - - QUINOLINIUM COMPOUNDS
546 / 138_____ - - - - QUINOLIZINES
552 / 301____+ - - - - QUINONEDIAMINE
552 / 302_____ - - - - QUINONIMINES
546 / 173_____ - - - - QUINOPHTHALONE
544 / 353____+ - - - - QUINOXALINES
514 / 249_____ - - - - . . IN DRUG
546 / 133_____ - - - - QUINUCLIDINES
D22 / 107_____ - - - - QUIVER
254 / 40_____+ - - - - QUOINS
052 / 86______ - - - - QUONSET HUT

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

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Last Modified: 24 August 2000