Index to the U.S. patent classification

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Bibliographic Details
Previous Title:	United States. Patent Office. Index to classification
Corporate Authors:	United States. Patent and Trademark Office, United States. Patent and Trademark Office. Office of Classification Support
Format:	Serial
Language:	English
Published:	[Washington, D.C.] : U.S. Dept. of Commerce, Patent and Trademark Office : [Supt. of Docs., U.S. G.P.O., distributor,
Subjects:	United States. > Patent and Trademark Office. > Office of Documentation Planning and Support. > Manual of classification > Indexes > Periodicals Patents > United States > Classification > Indexes > Periodicals
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