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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 769
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A INVENTOR: T|st|e.r Kaurar BYJT^ ATTORNEYS. •THE HQXKIS PETSRS CO.. WASHINGTON, D. C. No. 845,007. PATENTED FEB. 19. 1907.A. MAURER.PHONOGRAPH HORN. APPLICATION FILED MAY 22, 1906. J SHEET8-8HEET 2. In … WITNESSES:Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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