Index to classification.

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New Title: Index to the U.S. patent classification
Corporate Author: United States. Patent Office.
Language(s): English
Published: Washington.
Subjects: Patents > Patents / United States > Patents / United States / Classification > Patents / United States / Classification / Periodicals.
Note: Issued in looseleaf form.
Physical Description: v. 27 cm.
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Item Link	Original Source
Full view 1963	University of California
Full view 1966-68	University of California
Full view 1972	University of California

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