United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 162
he phonogram-blank, of a rounded jewel re-producer, substantially as described. I 3. A reproducer or bearing-point for phono-graphs, consisting of a jewel not affected by 80chemicals or chemical action of the wax-likematerial of the phonogram-blank, substan-tially as described. This specification… … Xx^ £J3fe\X // ^*\\ y :^^ \ / 7 V^ ! P£T£R8 CO., PHOTO-LITHO,, WASHINQTON, 0. C United States Patent Office. THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY. PHONOGRAPH. SPECIFICATION forming part of Letters Patent No. 484,585, dated October 18, 1892. Application filed July 30, 1890. Renewed Marcli…
Phonograph · Patents
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