Subject-matter index of patents for inventors issued by the United States Patent Office from 1790 to 1873, inclusive.

Bibliographic Details
Corporate Author:	United States. Patent Office
Other Authors:	Leggett, Mortimer Dormer, 1821-1896
Format:	Book
Language:	English
Published:	North Stratford, NH : Ayer Company Publishers, 2000.
Series:	America in two centuries, an inventory.
Subjects:	Patents > United States > Indexes.

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