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11. Patents. [Manual of classification of patents, 1923] minor correction sheet [July 1-Dec. 31, 1925].

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1926.]
SuDoc number:: I 23.2:C 56/4/923-cor.sheet

12. Patents. [Manual of classification of patents. 1923] errata and minor correction sheet, Jan. 1-June 30, 1926.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1926.]
SuDoc number:: I 23.2:C 56/4/923-errata-4

13. Patents. [Manual of classification of patents, 1923, substitute page containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1925
SuDoc number:: I 23.2:C 56/4/923-p.122a/2

14. Patents. [Manual of classification of patents, 1923, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1925.]
SuDoc number:: I 23.2:C 56/4/923-p.231-233

15. Patents. [Manual of classification of patents, 1923, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1925
SuDoc number:: I 23.2:C 56/4/923-p.169, etc.

16. Patents. [Manual of classification of patents, 1923] errata and minor correction sheet, Jan. 1-June 30, 1925.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1925.]
SuDoc number:: I 23.2:C 56/4/923-errata-3

17. Patents. [Manual of classification of patents, errata and minor correction sheet, July 1-Dec. 31, 1924.

Corporate/Agency Authors:: Patent Office and Interior Department
Publisher:: Patent Office
Date:: [1925.]
SuDoc number:: I 23.2:C 56/4/923-errata-2

18. Patents. [Manual of classification of patents, 1923, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Interior Department
Publisher:: Patent Office
Date:: [1924.]
SuDoc number:: I 23.2:C 56/4/923-p.33, 34, etc.

19. Patents. [Manual of classification of patents, 1923, substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office and Interior Department
Publisher:: Patent Office
Date:: [1924.]
SuDoc number:: I 23.2:C 56/4/923-p.3, 4, etc.

20. Patents. [Manual of classification of patents, 1923, substitute pages containing corrections.] errata and minor correction sheet, Jan. 1-June 30, 1924.

Corporate/Agency Authors:: Patent Office and Interior Department
Publisher:: Patent Office
Date:: [1924.]
SuDoc number:: I 23.2:C 56/4/errata

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