Sudoc Stem: C 21.3/2 - Blacklight Search Results

Start Over Sudoc Stem C 21.3/2

1. Classification definitions. 428. Stock material or miscellaneous articles; [by]R. Aull , F. J. Cullen [and others).

Corporate/Agency Authors:: Patent and Trademark Office and Commerce Dept.
Publisher:: Patent and Trademark Office
Date:: Feb. 1975
SuDoc number:: C 21.3/2:428

2. Classification definitions. 403. Joints and connections.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: July 1973
SuDoc number:: C 21.3/2:403

3. Classification definitions, established by Office of Patent Classification. 404. Road structure, process and apparatus.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Dec. 1972
SuDoc number:: C 21.3/2:404

4. Classification definitions. 423. Chemistry, inorganic; established by Office of Patent Classification and Systems.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: July 1972
SuDoc number:: C 21.3/2:423

5. Classification definitions, established by Office of Search Systems and Documentation. class 444. Programmed data processors, data processing methods and procedures.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [January 1972]
SuDoc number:: C 21.3/2:(nos.)

6. Classification definitions, established by Office of Search Systems and Documentation. class 425. Plastic article or earthenware shaping or treating, apparatus.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Nov. 1971
SuDoc number:: C 21.3/2:(nos.)

7. Classification definitions, established by Office of Search Systems and Documentation. class 260. Chemistry, carbon compounds; revised by Office of Search Systems and Documentation. Revision 2.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Oct. 1971
SuDoc number:: C 21.3/2:260/rev.2

8. Classification definitions, established by Office of Search Systems and Documentation. class 408. Cutting by use of rotating axially moving tool.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Mar. 1971
SuDoc number:: C 21.3/2:408

9. Classification definitions. class 417. Pumps, established by Office of documentation.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Mar. 1970
SuDoc number:: C 21.3/2:(nos.)

10. Classification definitions. class 418. Rotary expansible chamber devices; established by Office of Documentation.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Mar. 1970
SuDoc number:: C 21.3/2:(nos.)

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