United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 352
other sounds, a norotating support over which the material isfrictionally carried, j^rovided with a circum-ferential groove or channel substantially asshown. In testimony whereof I have affixed my sig- 115nature in presence of two witnesses. CHARLES ADAMS RANDALL. Witnesses: Geo. J. B. Franklin, F.…
Phonograph · Patents
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