United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1015
n … THE NORMS PETERS CO.. WASHINGION, O. C. UNITED STATES PATENT OFFICE. JONAS W. AYLSWORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO NEWJERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A CORPO-RATION OF NEW JERSEY. PROCESS OF MAKING DUPLICATE PHONOGRAPH-RECORDS. No. 855,605. Specification of Letters…
Phonograph · Patents
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