United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 601
edthis 28th day of April 1909. JONAS W. AYLSWORTH. Witnesses: Dyer Smith,John M. Canfield. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. PROCESS FOE MAKING PHONOGRAPH KECOBDS, # 1,146,386 J.W.Aylsworth, Patanted-July 13,…
Phonograph · Patents
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