Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 464
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No. 643,183. Patented Feb. 13, 1900. G. BETTINL PHONOGRAPH. (Application filed Kay 1, 1897.) (No Model.) 2 Sheet*— Sheet I. … 7^^3, WITNESSES: INVENTOR Aj^Jk^/r^^.^ ^ -h^l^ ATTORNEYPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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