Author: Commerce Department / Sudoc Stem: C 21.3 - Blacklight Search Results

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11. Classification bulletin 83, July 1-Dec. 31, 1942, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1943.]
SuDoc number:: C 21.3:83

12. Classification bulletin 84, Jan. 1-May 28, 1943, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1943.]
SuDoc number:: C 21.3:84

13. Classification bulletin 81, July 1-Dec. 31, 1941, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1942.]
SuDoc number:: C 21.3:81

14. Classification bulletin 82, Jan. 1-June 30, 1942, containing classification of subjects of invention revised by Classilication Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1942.]
SuDoc number:: C 21.3:82

15. Classification bulletin 80, Apr. 1-June 30, 1941, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1941.]
SuDoc number:: C 21.3:80

16. Classification bulletin 77, July 1-Dec. 31, 1939, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1940.]
SuDoc number:: C 21.3:77

17. Classification bulletin 78, Jan. 1-June 30, 1040, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1940.]
SuDoc number:: C 21.3:78

18. Classification bulletin 75, July 1-Dec. 31, 1938, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1939.]
SuDoc number:: C 21.3:75

19. Classification bulletin 76, Jan. 1-June 30, 1939, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1939.]
SuDoc number:: C 21.3:76

20. Classification bulletin 73, July 1-Dec. 31, 1937, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1938.]
SuDoc number:: C 21.3:73

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