United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 422
LITHOGRAPMINQ COMPANY.W ASH I NATO N. O. O. (No Model.) 4 Sheets—Sheet 2. A. K. KELLER. ATTACHMENT FOR OPERATING PHONOGRAPHS. No. 518,190. Patented Apr. 10, 1894. … \/^ tA^^^^i.cA^t^c _ NVENTOR y (No Model.) 4 Sheets—Sheet 3. A. K. KELLER.ATTACHMENT FOR OPERATING PHONOGRAPHS. No. 518,190. Patented Adf. 10, 1894. v^^/^^-
Phonograph · Patents
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