United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 58
cJ-H-1^€44.-to-& S)l^ ^ Cttto^vie 7^ (No Model.) 3 Sheets—Sheet 3 J. F. OTT. ATTACHMENT FOE PHONOGEAPHS. No. 466,922. Patented Jan. 12, 1892. … S PETERS CO., PHOTO-LITHO., WASHINQTON, D. C. United States Patent Office. JOHN F. OTT, OF ORANGE, ASSIGNOR TO THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY. ATTACHMENT FOR PHONOGRAPHS. SPECIFICATION forming part of Letters Patent No. 466,922, dated January 12, 1892, Application filed December…
Phonograph · Patents
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