United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1215
Fig-17 … Jtivenfot COLlMbIA PL\NOGKAlJH Cu . WASHINGTON. I>. C UNITED STATES PATENT OFFICE. MICHEL de PEZZER, OF PARIS, FRANCE.INDICATING DEVICE FOR PHONOGRAPHY AND ITS APPLICATION. 1,106,115- Specification of Letters Patent. Patented Dec. 28, 1915. Original application filed June 15, 1909. Serial Wo.…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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