Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 355
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E/q. 6. … /A/VE/VTOE: 9/S PETER!, CO . PHOTO-LI7HO . WASHINCTOH. D C. 1,137,187. J. J. COMER. RESONATOR. APPLICATION FILED JAN. 23, 1911. Patented Apr. 27,1915. 4 SHEETS-SHEET 4. JVf.7.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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