English
statement of responsibility: Arranged and compiled under the supervision of the Hon. Benj. Butterworth, commissioner of patents ... Reproduced and printed in pursuance of act of Congress March 3, 1886, and acts supplementary thereto · 200 pages of illustrations, with descriptive letterpress, representing primitive methods and modern patents
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Ebook · The growth of industrial art · United States. Patent Office, Butterworth, Benjamin, 1837-1898 · Internet Archive
Industrial arts · Patents