United States Patent Office - Classification of Inventions by Divisions 1897
Book details
- Title
- United States Patent Office - Classification of Inventions by Divisions 1897
- Author
- Divisions
- Publication year listed
- 1897
- Format
- Public domain eBook
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About this book
United States Patent Office - Classification of Inventions by Divisions 1897
Author: United States Patent Office
Year: 1897
Classification of Inventions by Divisions, Official Gazette of the United States Patent Office, Supplement Containing the Revised Classification of Subjects of Invention, Arranged by Divisions, and the Subclasses Arranged Alphabetically, United States Patent Office, Washington, D.C., January 1, 1897.
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