United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1037
X7 £3 eJ*vu«*vto* (L COLUMBIA PLANOORAPH CO., WASHINGTON. D. C. s UNITED STATES PATENT OFFICE. CHARLES AGNER, JR., OF PHILADELPHIA, PENNSYLVANIA. PHONOGRAPH. 1,162,202. Specification of Letters Patent. Patented Nov. 30, 1915. Application filed March 29, 1915. Serial No. 17,783. 2h all whom it may…
Phonograph · Patents
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