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Start Over Author Commerce Department Sudoc Stem C 21.12

11. Patents. [Manual of classification of patents, 1940, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1944
SuDoc number:: C 21.12:940/p.95,rev.-95a,etc.

12. Patents. [Manual of classification of patents, 1940] [substitute title page and other pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1944
SuDoc number:: C 21.12:940/t.p./rev.,etc.

13. Patents. [Manual of classification of patents, 1940] design classes.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1944.]
SuDoc number:: C 21.12:940/design classes

14. Patents. [Manual of classification of patents, 1940] errata and minor correction sheet, Jan. 1-June 30, 1944.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1944.]
SuDoc number:: C 21.12:940/errata 944

15. Patents. [Manual of classification of patents, 1940] errata and minor correction sheet, July 1-Dec. 31, 1943.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1944.]
SuDoc number:: C 21.12:940/errata 943-2

16. Patents. [Manual of classification of patents, 1940, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1943
SuDoc number:: C 21.12:940/p.291,rev.,etc.

17. Patents. [Manual of classification of patents, 1940, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1943
SuDoc number:: C 21.12:940/p.125-126,rev.,etc.

18. Patents. [Manual of classification of patents, 1940] errata and minor correction sheet, Jan. 1-Jnne 30, 1943.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1943.]
SuDoc number:: C 21.12:940/errata 943

19. Patents. [Manual of classification of patents, 1940] errata and minor correction sheet, July 1-Dec. 31, 1942.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1943.]
SuDoc number:: C 21.12:940/errata 942-2

20. Patents. [Manual of classification of patents, 1940] errata and minor correction sheet, [substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1943.]
SuDoc number:: C 21.12:940/P.87, rev., etc.

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