United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 331
March12 1917. JOHN B. BARLOW. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. IGRAPHOPHONjl- PATENT; 1,2 55,822 MECHANISM FOR CONTROLLING MOTION PICTURE ANDSOUND REPRODUCING MECHANISMS. 1,255,822 -.- H. W. Rogers, Patented Feb.… … Attorneys H. W. ROGERS.R CONTROLLING MOTION PICTURE AND SOUND REPRODUCING MECHANISMS. Tatented Feb. 5,1918. 2 SHEETS-SHEET 2. 1,255,822. APPLICATION FILED OCT. II, 1913.
Phonograph · Patents
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