What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
QUADRANT
ANGLE MEASUREMENT
HORIZONTAL AND VERTICAL ANGLES .33/281
HORIZONTAL ANGLE ...............33/285
VERTICAL ANGLE .................33/282+
SPINNING MULE .....................57/322+
QUADRASONIC ......................... 381/19+
QUADRUPLEX TELEGRAPHY ............... 370/34+
QUARRYING ........................... 299/15
QUARTER WAVE TRANSMISSION LINE ...... 333/27
QUARTERS SHOE BLANK ................. 36/48+
QUARTZ (SEE PIEZOCRYSTALS)
GLASS MANUFACTURING ...............65
COMPOSITIONS ...................501/27+
LAMPS .............................313/112
MERCURY VAPOR ..................313/112
QUATERNARY AMMONIUM ................. 564/281
ACYCLIC ...........................564/291+
AROMATIC ..........................564/282+
AZO COMPOUND CTG ..................534/603+
QUEBRACHO EXTRACT ................... 560/68+
DESCALING AGENT CONTAINING ........252/83+
TANNING WITH ......................8/94.32
ALUMINUM COMPOUND CONTAINING ...8/94.3
QUEEN BEE CELLS AND CAGES ........... 449/28
QUENCHERS AND QUENCHING
COATING COOLING ...................427/398.3
COKE QUENCHERS ....................239/750+
DISTILLATION RESIDUES .............201/39
AUTOTHERMIC SYSTEMS ............202/95
THERMOLYTIC APPARATUS ..........202/227+
METAL HEAT TREATMENT PROCESES .....148+
METAL HEATING AND QUENCHING .......266/114+
APPARATUS ......................266/121+
METAL QUENCHING APPARATUS .........266/114+
STILL BOTTOM CLOSURES .............202/253
QUESTION AND ANSWER ................. 434/322+
CORRECT ANSWER INDICATED ..........434/327+
ELECTRICAL RECORDING MEANS ........434/362
EXAMINATION CARD OR SHEET .........434/363
GRADING OF RESPONSE FORM ..........434/353+
RESPONSES ELECTRICALLY COMMUNICATE 434/350+
TO MONITOR OR RECORDER .........434/350+
QUICK ACTING
FLUID PRESSURE BRAKE SYSTEMS
AUTOMATIC SYNCHRONIZING ........303/37+
MOTOR RELEASING ................303/69
GUNS ..............................89/125+
PORTABLE WOOD WORKING CLAMPS
PARALLEL SCREW .................269/140+
U BEAM .........................269
QUICK SETTING PORTABLE RAIL DRILLS 408/72.R+
QUICK TRAVERSE BOBBIN AND COP .....242/31
CONE ...........................242/31
WINDING ........................242/43.R
QUICK WHEEL RELEASE TROLLEY HEADS .191/63.1
QUICK DETACHABLE
ELECTRIC CONNECTORS ...............439/180
PLOW ELEMENTS .....................172/749+
SHAFT COUPLING ....................464/901*
QUICKSILVER (SEE MERCURY)
QUILLSTOCK SPINNING ................. 57/4
QUILTING ............................ 112/117+
FRAMES WITH CLOTH WINDING MEANS ...242/67.1R+
QUILTS .............................. 5/482+
DESIGN ............................D06/603+
BEDDING PER SE .................D06/595
QUINALDINE .......................... 546/181
QUINAZOLINES ........................ 544/283+
QUINHYDRONES ........................ 552/293
QUINIC ACID ......................... 562/508
QUINICINE, IN DRUG .................. 514/314
QUINIDINE, IN DRUG .................. 514/305
QUININE ............................. 546/134
IN DRUG ...........................514/305
QUINIZARIN .......................... 552/262
QUINOLINE ........................... 546/152+
AZO COMPOUNDS .....................534/770+
QUINOLINIUM COMPOUNDS ............... 546/182
QUINOLIZINES ........................ 546/138
QUINONEDIAMINE ...................... 552/301+
QUINONIMINES ........................ 552/302
QUINOPHTHALONE ...................... 546/173
QUINOXALINES ........................ 544/353+
IN DRUG ...........................514/249
QUINUCLIDINES ....................... 546/133
QUIVER .............................. D03/36+
QUOINS .............................. 254/40+
QUONSET HUT ......................... 52/86