United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 951
1,265,757. J. H. DOOLEY. SPEED REGULATOR AND INDICATOR FOR PHONOGRAPHS.APPLICATION FILED DEC. 26, 1916. RENEWED OCT. 17.1917. Patented May 14,1918. … 2 SHEETS-SHEET 2. rzq.* zu
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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