United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 463
v Attorneys* INCTON, D, C. 1,141,232. W. E. CHILDERS.MULTIPLE RECORD PHONOGRAPH. APPLICATION FILED JUNE 9, 1914. Patented June 1,1915. 5 SHEETS-SHEET 4. … JPty.^f. Witnesses
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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