United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 357
/A/VE/VTOE: 9/S PETER!, CO . PHOTO-LI7HO . WASHINCTOH. D C. 1,137,187. J. J. COMER. RESONATOR. APPLICATION FILED JAN. 23, 1911. Patented Apr. 27,1915. 4 SHEETS-SHEET 4. JVf.7. … nt /NV^yVTOf?: % THt: NORRtS PETERS CO . PHOTQ-LITHO . WASHNi, >QN D UNITED STATES PATENT OFFICE. JOHN J. COMER, OP CHICAGO, ILLINOIS, ASSIGNOR TO AUTOMATIC ENUNCIATORCOMPANY, OP CHICAGO, ILLINOIS, A CORPORATION OP ILLINOIS. RESONATOR. 1,137,187. Specification of Letters Patent. Patented Apr.…
Phonograph · Patents
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