Manual of classification of patents ...

Description

Corporate Author

United States. Patent Office.

Language(s)

English

Published

Washington, Govt. Print. Off., 1923-

Subjects

Patents > Patents / United States.

Note

At head of title: Department of the Interior. Hubert Work, secretary. United States Patent Office. Thomas E. Robertson, commissioner.
Loose-leaf manual.

Physical Description

v. 15 x 24 cm.

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