United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 634
QUtcyt^vi^ t HOftRIS PETERS CO . PHOTO-LiTMO.. WASHINGTON. O C (No Model.) No. 539,254. 2 Sheets—Sheet 2. A. C. PERGUSON. RECORDING AND REPRODUCING- SOUND WAVES. Patented May 14, 1895. … QXKov%\^^ THE ♦ORfttS PETERS CO . (•HOTO-LITMO. wfcSMIMCTON. D. C United States Patent Office. ARTHUR C. FERGUSOX, OF SARATOGA SPRIXGS, XEW YORK.RECORDING AND REPRODUCING SOUND-WAVES. SPECIFICATION forming part of Letters Patent No, 539,254, dated May 14,1895. Ipplicatioa filed Marct 7, 1895.…
Phonograph · Patents
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