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371. Classification bulletin 65, Jan. 1-Dec. 31, 1933, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1934.]
SuDoc number:: C 21.3:65

372. Classification bulletin 66, Jan. 1-June 30, 1934, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Agriculture Department
Publisher:: Patent Office
Date:: [1934.]
SuDoc number:: C 21.3:66

373. Classification bulletin 64, Jan. 1-Dec. 31, 1932, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1933.]
SuDoc number:: C 21.3:64

374. Classification bulletin 63, Jan. 1-Dec. 31, 1931, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: [1932.]
SuDoc number:: C 21.3:63

375. Classification bulletin 62, Jan. 1-Dec. 31, 1930, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1931.]
SuDoc number:: C 21.3:62

376. Classification bulletin 61, Jan. 1-Dec. 31, 1929, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1930.]
SuDoc number:: C 21.3:61

377. Classification bulletin 60, Jan. 1-Dec. 31, 1928, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1929
SuDoc number:: C 21.3:60

378. Classification bulletin 59, July 1-Dec. 31, 1927, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1928
SuDoc number:: C 21.3:59

379. Classification bulletin 57, July 1-Dec. 31, 1926, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1927
SuDoc number:: C 21.3:57

380. Classification bulletin 58, Jan. 1-June 30, 1927, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1927
SuDoc number:: C 21.3:58

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