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361. 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

362. 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

363. 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

364. Classification bulletin 74, Jan. 1-June 30, 1938, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: [1938.]
SuDoc number:: C 21.3:74

365. Classification bulletin 71, July 1-Dec. 31, 1936, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1937.]
SuDoc number:: C 21.3:71

366. Classification bulletin 72, Jan. 1-June 30, 1937, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1937.]
SuDoc number:: C 21.3:72

367. Classification bulletin 69, July 1-Dec. 31, 1935, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: [1936.]
SuDoc number:: C 21.3:69

368. Classification bulletin 70, Jan. 1-June 30, 1936, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1936.]
SuDoc number:: C 21.3:70

369. Classification bulletin 67, July 1-Dec. 31, 1934, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1935.]
SuDoc number:: C 21.3:67

370. Classification bulletin 68, Jan. 1-June 30, 1935, containing classification of subjects of invention revised by Classification Division.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1935.]
SuDoc number:: C 21.3:68

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