United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 227
1,254,330. D. F. & K. D. McQUIRE. SOUND RECORDING AND REPRODUCING MACHINE.APPLICATION FILED JUNE 1. 1917- Patented Jan. 22,19ia 2 SHEETS-SHEET 2. … Rtf.lt. AttyS. UNITED STATES PATENT OFFICE, DAVID FREDERICK McQUIRE AND KENNETH DOUGLAS McQUIRE, OE HORNCHURCH, ENGLAND. SOUND RECORDING AND REPRODUCING MACHINE. 1,254,330. Specification of Letters Patent. Patented Jan. 22, 1918. Application filed June 1, 1917. Serial No. 172.304. To all whom it…
Phonograph · Patents
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