Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 583
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Fig. 2 34* Fig. 4. … £3 29 £1 Fig. 5. Fig. 7. Fig.6.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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