United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 312
THE MOnWS PErtllS CO . I-MOTO-UTHO.. W«SHiN<ITOK. O- C. (No Model.) No. 499.879. 7 Sheets—Sheet 6. T. A. EDISON. PHONOGRAPH. PatentedJune 20, 1893. … r-^- 11.
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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