Publish Year Decade: 1930 - 1939 / Sudoc Stem: C 21.2 - Blacklight Search Results

Start Over Publish Year Decade 1930 - 1939 Sudoc Stem C 21.2

11. Trade-marks. General information about protection of trade-marks, prints, and labels.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: Revised Aug. 1, 1932. 1932
SuDoc number:: C 21.2:T 67/932

12. Trade-marks. General information about protection of trade-marks, prints, and labels.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: Revised May 1, 1931. 1931
SuDoc number:: C 21.2:T 67/931

13. Patents. General information concerning patents [Mar. 1931].

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1931
SuDoc number:: C 21.2:P 27/931

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