United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 943
*^&&S> UNITED STATES PATENT OFFICE. MARSHALL B. PEAL, OF BROOKLYN, NEW YORK.PHONOGRAPH. 1,365,502. Specification of Letters Patent. Patented May 7, 1918. Application filed April 20,1916. Serial No. 92,563. To all whom it may concern: Be it known that I, Marshall, B. Peal,residing at…
Phonograph · Patents
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