United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 444
WITNESSES: . ta^i-t-tt^, J^ ^ INVENTORBY^^ ATTORNEYS TUm KATIOHAL UTMOa«APHIW« COMPANY.WASHINQTON. O. C. (No Model.) 4 Sheets—Sheet 2. A. K. KELLER. MACHINE FOR OPERATING PHONOGRAPHS. No. 518,191. Patented Apr. 10, 1894. … WITNESSES INVENTOR ATTORNEYS. THE NATWNAL LITHOGRAPHINQ COMPANY,WASHINarON, D. C. (No Model.) 4 Sheets—Sheet 3, A. K. KELLER. MACHINE FOE OPERATING PHONOGRAPHS. No. 518,191. Patented Apr. 10, 1894. WITNESSES:
Phonograph · Patents
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