Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 669
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Attorneys 1,261,795. C. W. EBELING. SOUND REPRODUCING MACHINE. APPLICATION FILED AUG. 20, 1913. … WitnessesPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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