1664938
9780405077371
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This threevolume set inventories every patent issued by the United States Patent Office during the first 83 years of its life. Patents are listed by inventor, invention and subject.Leggett, M. D. is the author of 'Subject Matter Index of Patents for Inventions Issued by the United States Patent Office from 1790 to 1873, Inclusive.', published 1976 under ISBN 9780405077371 and ISBN 0405077378.
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