Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 353
/NV^ATTOK: V?7~rO/?JVEY<S. ■IE NOKHIS PETERS CO , PHOTO LIT 1,137,187. J, J. COMER.RESONATOR. APPLICATION FILED JAN. 23, 191 I. Patented Apr. 27,1915. 4 SHEETS—SHEET 2. … /AME/YTOf?: THE NORRXS PETERS CO., PHOTOLITHO.. WASHINGTON. D 1,137,187. Witnesses J. J. COMER.RESONATOR. APPLICATION FILED JAN. 23, 1911. Patented Apr. 27,1915. 4 SHEETS—SHEET 3.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
More pictures from [Graphophone patents]
More like this