United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 440
J. I. GEMMILL. AUTOMATIC 6RAPH0PH0NE OF THE DISK EEOORD TYPE. APPLICATION FILED MAS. 1, 1911. 1,028,707. Patented June 4, 1912. 12 SHEETS-SHEET 9. … Invenfbr, COLUMSrA PlXKiOQRAPH CO.. WASHINGTON. D. <
Phonograph · Patents
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