United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 158
2. The combination, in a phonograph, witha phonogram-blank of comparatively-soft ma-terial, of a jewel recorder, substantially asdescribed. 3. The combination, in a phonograph, witha phonogram-blank of a wax-like material, ofa sapphire recorder, substantially as set forth- This specification signed… … (L 6 r^ Wku^hi^ flit-oti-ic-y/! t NOAlUe PETtflS CO., PHOTO-LITHO., V United States Patent Office. THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY.PHONOGRAPH-REPRODUCER. SPECIFICATION forming part of Letters Patent No. 484,584, dated October 18,1892, Application filed May 27, 1890. Renewed March…
Phonograph · Patents
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