United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1209
fr<r\+.,f<n-. i tis—i*<^-vyt COLUMBIA J- <).. WASHINGTON, H. C 1,166,115. M. DE PEZZER.NDICATING DEVICE FOR PHONOGRAPHY AND ITS APPLICATION. APPLICATION FILED JULY 26, 1910. … Patented Dec. 28, 1915 6 SHEETS—SHEET 3. i! b
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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