United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 555
Mg.2 2 3 … (L/C MtfLft. nxxintoz COLUMBIA PLANOQRAPH CO., WASHINGTON, D. C. UNITED STATES PATENT OFFICE. VICTOR H. EMERSON, OF NEW YORK, N. Y., ASSIGNOR TO AMERICAN GRAPHOPHONECOMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF WEST VIRGINIA. SOUND-RECORD AND THE PRODUCTION THEREOF. 1,145,360. Specification…
Phonograph · Patents
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![An illustration from [Graphophone patents], 1878, leaf 555](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten15unit-555-311.webp)
