United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 779
INVENTOR WITNESSES BY ATTORNEY J. N. M. KEYZER. PHONOGRAPH CUT-OFF.APPLICATION FILED APR. 28. 1917. 1,263,433. Patented Apr. 23,1918. 2 SHEETS—SHEET 2. … Z3 INVENTOR WITNESSES BY (Joseph A A. /?ey&e/<. ATTORNEY UNITED STATES PATENT OFFICE. JOSEPH N. M. KEYZER, OF LYNCHBURG, VIRGINIA.PHONOGRAPH CUT-OFF. 1,263,433. Specification of letters Patent. Patented Apr. 23, 1918. Application filed April 28,1917. Serial No. 165,195. To all whom it may…
Phonograph · Patents
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