
Title:
The Classification of Patents
Classification of Patents.
Author:
United States. Patent Office.
Subject:
| Patents |
| United States |
| Patents -- United States. |
Publisher:
Govt. print. off.
Date:
1915
Digital Format:
HTML
PDF
Kindle
EPUB
Source:
http://openlibrary.org/works/OL2843839W
Right Management:
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