United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 583
TONE MODULATOR FOR PHONOGRAPHS. 1,360;001 C C. Kuo, Filed Nov, 2, 1916,Patented Mar. 19, 1918. C. C. KUO. TONE MODULATOR FOR PHONOGRAPHS. APPLICATION FILED NOV. 2, 1916. 1,260,001. Patented Mar. 19,1918. 2 SHEETS—SHEET 1. Fig.l. J3 _ ££ l -31 … Fig. 2 34* Fig. 4.
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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