United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 469
® ® ftg.S … UNITED STATES PATENT OFFICE. WILLIAM STUEBING, JR., AND LOUIS T. VAN GUELPEN, OE CINCINNATI, OHIO, ASSIGN-ORS OE SEVEN-SIXTEENTHS TO SAID STUEBING, TWO-SIXTEENTHS TO SAID VANGUELPEN, AND SEVEN-SIXTEENTHS TO L. A. BURRELL, OF CINCINNATI, OHIO. RECORD-FILING MECHANISM. 1,258,498. Specification of…
Phonograph · Patents
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