United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 302
R. B. SMITH. MULTIPLE RECORD PHONOGRAPH. APPLICATION PILED FEB. 8, 1906. Patented Apr. 9, 1912. 1,023,047. 6 SHEETS-SHEET 3. … INVENTOR WITNESSES: Jti€ha,rd3. Smith , BY ATTORNEY'S COLUMBIA PLANOGRAPH CO..
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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