United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1051
tna fflfrt T / / 3— Snientax cJ. fiodjs//e/J (X2& Cfttaineu UNITED STATES PATENT OFFICE. CHARLIE J. B0T7SFIELD, OF BAY CITY, MICHIGAN, ASSIGNOR TO THE DELPHEON COM-PANY, OF BAY CITY, MICHIGAN, A CORPORATION OF MICHIGAN. FILING DEVICE FOR TALKING-MACHINE RECORDS. 1,267,366. Specification of…
Phonograph · Patents
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