United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 789
2 SHEETS-SHEET 2. … €• UNITED STATES PATENT OFFICE. THOMAS H. MACDONALD, OF BRIDGEPOE/T, CONNECTICUT, ASSIGNOR TO AMERICANG-RAPHOPHONE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OFWEST VIRGINIA. EJECTOR OR THROW-OFF FOR SOUND-RECORDS. 1,152,539. Specification of Letters Patent. Patented Sept. 7,1915.…
Phonograph · Patents
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