Publish Year Decade: 1940 - 1949 / Sudoc Stem: C 21.12 - Blacklight Search Results

Start Over Publish Year Decade 1940 - 1949 Sudoc Stem C 21.12

1. Manual of classification, amended to Apr. 1948.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1948.]
SuDoc number:: C 21.12:948

2. Index to classification of patents, July 1, 1947.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1947.]
SuDoc number:: C 21.12:947/ind.

3. Manual of classification of patents [revised to July 1947].

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1947.]
SuDoc number:: C 21.12:947

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

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1946
SuDoc number:: C 21.12:940/p.25-26,rev.,etc

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

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1946
SuDoc number:: C 21.12:940/p.148a-148b,rev.

6. Patents. Classification of patents issued Jan. 2-June 26, 1945. [substitute pages containing corrections.]

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1945
SuDoc number:: C 21.12:940/p.233 rev.-233a, etc.

7. Patents. Corrections to Manual of classification of patents, containing all corrections during period from date of publication of Manual (Jan. 1, 1940) through order 3964 (July 5, 1945).

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1945 [published 1946]
SuDoc number:: C 21.12:940/errata 945

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

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1945
SuDoc number:: C 21.12:940/p.254, rev.-2, 254a, etc.

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

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1945
SuDoc number:: C 21.12:940/p.170a-f

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

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1945
SuDoc number:: C 21.12:940/p.159-160/rev., etc.

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