United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 424
\/^ 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^^/^^- … WITNESSp^ INVENTOR^^TTORNEYS (No Model.) 4 Sheets—Sheet 4. A. K. KELLER. ATTACHMENT FOR OPERATING PHONOGRAPHS. No. 518,190. Patented Apr. 10, 1894.
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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