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Classified index of subjects of invention adopted in U.S. Patent Office.

Bibliographic Details
Corporate Author:	United States. Patent Office
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : U.S. Government Printing Office, 1872.
Subjects:	Patents > United States > Classification. Electronic books.
Online Access:	Connect to the full text of this electronic document

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