... Manual of classification of patents ... January 1, 1940.

Description

Corporate Author

United States. Patent Office.

Language(s)

English

Published

Washington, U. S. Govt. print. off., 1940.

Subjects

Patents > Patents / United States.

Note

Loose-leaf.
At head of title: Department of commerce. United States Patent Office.
----...Index to classification of patents to accompany the Manual of classification of patents, revised to January 1, 1940 ... Washington, U.S. Govt. print. off., 1940. 1 v. 15x24 cm.

Physical Description

1 v. 15 x 24 cm.

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