Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1034
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A. FISCHER. SOUND BOX FOB TALKING MACHINES. APPLICATION PILED OCT. 23. 1908. 942,816. Patented Dec. 7, 1909. bk -n m TkfL -e … Fia%.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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