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Scientific American, Vol. 69, No. 17 (1893) (1893)

leaf 15

An illustration from Scientific American, Vol. 69, No. 17 (1893), 1893, leaf 15
Scientific American. [OcTOBER 21, 1893. … ical structure of an electric telephone to Great Britain and Canada letters patent applied for. be used to produce the electrical action Eastman Kodak Company, M. SCHEMBRI, 3% Van Buren St., St. Paul, Minn. Patented May 10, July 19, 1887; on which the first patent rests. The third July 10, 1888;…

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