United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 368
Vf. I (No Model.) No. 503,610. 3 Sheets—Sheet 3. J. W. MACKINTOSH. PHONOGRAPH. Patented Aug. 22, 1893. VVi-rrJ … f,v<.kvki>>.svV^<?ii-^XWi^A>^>>wS Fi czT.T Ef a^ EBsers I plv^E:rliai=\- United States Patent Office, JOHN W. MACKINTOSH, OF BROOKLINE, MASSACHUSETTS. PHONOGRAPH. SPECIFICATION forming part of Letters Patent No. 503,610, dated August 22, 1893.ipplication filed September 6,…
Phonograph · Patents
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