Catalog Record: Manual of classification of subjects of invention of the United States Patent Office | HathiTrust Digital Library

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Manual of classification of subjects of invention of the United States Patent Office.

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New Title: Patent Office. Manual of classification of patents
Previous Title: Classification of subjects of invention of the United States Patent Office
Corporate Author: United States.
Language(s): English
Published: Washington : G.P.O.
Subjects: Patents > Patents / United States > Patents / United States / Classification > Patents / United States / Classification / Periodicals.
Note: Description based on: Rev. to Jan. 1, 1912.
Physical Description: v. ; 29 cm.
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