United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 481
t-ed at one end to said base by a universal joint,a feed-nut carried by said arm and engaging isaid feed-screw and a track carried by saidbase for supporting the free end of said dia-phragm-supporting arm, substantially as setforth. This specification signed and witnessed 115this 24th dav of… … THE MORRIS PETERS CO.. WASHINGTON UNITED STATES PATENT OFFICE. WILLIAM W. ROSENFIELD, OF NEW YORK, N. Y. PHONOGRAPH. No. 831,630. Specification of Letters Patent. Patented Sept. 25, 1906. Application filed July 23,1903. Renewed July 2,1904. Serial No. 215,180. To all whom it may concern: Be it…
Phonograph · Patents
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