Catalog Issue Year Decade: 1950 - 1959 / Sudoc Stem: C 21.3 - Blacklight Search Results

Start Over Catalog Issue Year Decade 1950 - 1959 Sudoc Stem C 21.3

11. Classification bulletin. 153. Class 20, Wooden buildings, containing classification definitions of above class revised bY classification group of Patent Office, to include all changes through order 197, dated June 28, 1956. Revision 1.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

12. Classification bulletin. 422. class 96, Photographic chemistry, processes and materials, containing classification definitions of above class revised by classification group of Patent Office to include all changes through order 206, dated Nov. 23, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

13. Classification bulletins. 155. Revision 1, class 24, Buckles, buttons, clasps, etc., containing definitions of above class revised by classification group of Patent Office, to include all changes through order 197, dated June 28, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

14. Classification bulletins. 200. Revision 1, class 260, Chemistry, carbon compounds, containing classification definitions of above class revised by Classification Group of Patent Office, to include all changes through order 192, dated Mar. 16, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

15. Classification bulletins. 313. Class 219, Electric heating, containing classification definitions of above class revised by Classification Group of Patent Office, to include all changes through order 200, dated Aug. 30, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

16. Classification bulletins. 421. Class 141, Fluent material handling, with receiver or receiver coacting means, containing classification definitions of above class revised by Classification Group of Patent Office, to include all changes through order 203, dated Sept. 28, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.3:(nos.)

17. Classification bulletins. 392. Class 251, Valves and valve actuation.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revised [edition]. June 1954
SuDoc number:: C 21.3:(nos.)

18. Classification bulletins. 409. Class 307, Electrical transmission or interconnection systems, Class 310, Electrical generator.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Apr. 1954
SuDoc number:: C 21.3:(nos.)

19. Classification bulletin. 416. Class 203, Longitudinal feeding of running or indefinite lengths.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1954.]
SuDoc number:: C 21.3:416

20. Classification bulletin. 419. Classification bulletin, June 21-25, 1954, containing classification order nos. 165 and 160, pertaining to classification of subjects of invention revised by Classification Group of Patent Office.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1954.]
SuDoc number:: C 21.3:419

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