United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 462
INVENTORBY^^^TORNEY^. (No Model.) 3 Sheets—Sheet 3. A. K. KELLER. MACHINE OR ATTACHMENT FOR OPERATINQ PHONOGRAPHS. No. 518,192. Patented Apr. 10, 1894. … WITNESSES INVENTORBY ATTORNEYS. ^c*^ tHe NATIONAL LITHOGRAPHING COMPANY.WASHINOTON. O. C. United States Patent Office. ALBERT K. KELLER, OF XE^y YORK, N. Y., ASSIGNOR, BY MESNE ASSIGN-MENTS, TO THE AUTOMATIC PHONOGRAPH EXHIBITION COMPANY OFNE^Y YORK. MACHINE OR ATTACHMENT FOR OPERATING PHONOGRAPHS.…
Phonograph · Patents
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