Publisher: Patent Office / Publish Year Decade: 1930 - 1939 / Sudoc Stem: C 21.3 - Blacklight Search Results

Start Over Publisher Patent Office Publish Year Decade 1930 - 1939 Sudoc Stem C 21.3

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

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