United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 133
Fig-. 4. … ■S4- ■UW^W - f/e. 5. Witnesses: 5/ 77& A:/. NORRIS PETERS CO.. PHOTO-LITHO.. WASHINGTON. D. C. UNITED STATES PATENT OFFICE. OTTO B. COLE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO ARION MANUFACTURINGCOMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE. PHONOGRAPH. 1,129,792. Specification of Letters…
Phonograph · Patents
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