Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 725
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W^r. J. W. KNIGHTS. COIN FREED GRAMOPHONE. APPLICATION FILED FEB. 18, 1915. RENEWED FEB. 19. 1918. 1,262,521. Patented Apr. 9,1918. 3 SHEETS-SHEET 2. … W/T/VFSSFS.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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