United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 202
J^2, … S CO , PHOTO-LITHO., United States Patent Office. GIANNI BETTINI, OF NEW YORK, N. Y.PHONOGRAPH. SPECIFICATION forming part of Letters Patent No. 488,380, dated December 20,1893. Application filed Haroli 14, 1892. Serial So. 424,814. (No model.) To all luhovv it may concern: Be it known that I,…
Phonograph · Patents
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