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[Graphophone patents] (1878)

United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 219

An illustration from [Graphophone patents], 1878, leaf 219
42 J>Jg. .9. … ,%£ -16

Phonograph · Patents

Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.

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