United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 985
of, I affix my signature,in presence of two witnesses. AVALLACE APPLBT0N BEATTY. Witnesses: T. A. WlTHERSPOON, E, M. Parker. 80 85 Copies of this patent may be obtained for five cents each, by addressing the Washington, D, C. Commissioner of Patents GRAPHOPHONE PATENT. METHOD OF COMPARING SOUNDS#… … 38^ Tf#.6. 33- F2 > *a t$®£ YZ73/ / n ^ INVENTOR. COLUMBIA PLANOORAPH CO., WASHINGTON, D. C. 1,159,023. C. M. HECK.METHOD OF COMPARING SOUNDS. APPLICATION FILED JULY 7, 1915.
Phonograph · Patents
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