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 " X "


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

378 / ________ - - - - X RAY
378 / 51______ - - - - . . ABSORPTION
378 / 91______ - - - - . . CIRCUITS
378 / 4_______ - - - - . . COMPUTERIZED TOMOGRAPHY
424 / 9.4____+ .- - - - . . CONTRAST COMPOSITIONS (IN VIVO)
378 / 70______ - - - - . . DIFFRACTION
D24 / 158____+ - - - - . . EQUIPMENT
430 / 967____* - - - - . . EXPOSURE PROCESS
430 / 966____* - - - - . . FILM
378 / 182_____ - - - - . . . . . WITH CASSETTE
378 / 156_____ - - - - . . FILTERS
378 / 44______ - - - - . . FLUORESCENCE
378 / 190_____ - - - - . . FLUOROSCOPE
378 / 34______ - - - - . . LITHOGRAPHY
378 / 167_____ - - - - . . PHOTOGRAPHIC
378 / 86______ - - - - . . SCATTERING
000 / ________ - - - - . . SCREEN
378 / 154_____ - - - - . . . . . BUCKY GRID
250 / 483.1___ .- - - - . . . . . FLUORESCENT OR PHOSPHORESCENT
378 / 140_____ - - - - . . . . . TUBE WITH SECONDARY RAY
252 / 478_____ - - - - . . SHIELD
250 / 515.1___ .- - - - . . SHIELDS AND SHIELDING
252 / 478_____ - - - - . . . . . COMPOSITIONS
378 / 192_____ - - - - . . SHOE FITTING MACHINE
378 / 65______ - - - - . . THERAPY
378 / 96______ - - - - . . TIMER
378 / 64______ - - - - . . TREATING
378 / 121_____ - - - - . . TUBE
378 / 121_____ - - - - . . TUBES
204 / 157.15_+ .- - - - . . USED IN REACTION TO PREPARE
204 / 157.15_+ .- - - - . . . . . INORGANIC OR ORGANIC MATERIAL
522 / 1______+ - - - - . . USED IN REACTION TO PREPARE OR
522 / 1______+ - - - - . . . . . TREAT SYNTHETIC RESIN OR
445 / 28______ - - - - . . . . . MANUFACTURE
206 / 809____* - - - - X-TYPE PACKAGE
000 / ________ - - - - XANTHATE
008 / 122_____ - - - - . . CELLULOSE FIBER TREATMENT
558 / 245____+ - - - - . . ESTERS
536 / 60_____+ - - - - . . . . . CELLULOSE
209 / 166____+ - - - - . . FROTH FLOTATION
252 / 61______ - - - - . . . . . COMPOSITIONS
549 / 388____+ - - - - XANTHENES
544 / 267____+ - - - - XANTHINES
000 / ________ - - - - XANTHOGENATION (SEE XANTHATE)
446 / 372_____ - - - - XANTHONES
536 / 27.8____ .- - - - XANTHOSINE (XANTHINE RIBOSIDE)
568 / 747_____ - - - - XENOL
423 / 262_____ - - - - XENON
430 / 31_____+ - - - - XEROGRAPHY(SEE PHOTOGRAPHY, ELECTRIC)
222 / DIG 1___ - - - - . . DISPENSING DIGEST
378 / 28______ - - - - XERORADIOGRAPHY
000 / ________ - - - - XYLENE
585 / 446____+ - - - - . . ALKYLATION TO PRODUCE
585 / 483____+ - - - - . . DEALKYLATION
568 / 716____+ - - - - XYLENOL
564 / 305____+ - - - - XYLIDINE
084 / 404_____ - - - - XYLOPHONE
D17 / 23______ - - - - . . DESIGN
D21 / 410_____ - - - - . . TOY (DESIGN)


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