United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 303
uly, 1915. RICHARD JAMES PRETTIE. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. ( 3RA PHOPH ON jl PAT £ NT) 1 ,2 55,143 CONTROL MEANS FOR SOUND REPRODUCING* MA CHIaUS. 1,355,143 -— — C. W. Ebeling, Patented Feb. 5, 1916,Filed…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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