United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1013
i kWwS ^ tft =1 T3 V\ 6* *t 7/kWc: aTA^ … _/72&&?e&0ir•/ -Zf. -<>^-v_ ^S% THE NORRt£ PETERS CO., WASHINGTON, D. C No. 855,605. PATENTED JUNE 4, 1907. J. W. AYLSWORTH.PROCESS OF MAKING DUPLICATE PHONOGRAPH RECORDS. APPLICATION FILED MAY 11, 1906. 2 SHEETS-SHEET 2. *> •^V N ^ e* $
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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