United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 417
THE NHRRIS PETERS CO . PHOTO-LITHO . WASHINCrON. D C. UNITED STATES PATENT OFFICE. HABEY W. HESS, OF NEW YORK, N. Y.ACOUSTIC INSTRUMENT. 1,138,755. Specification of Letters Patent. Patented May 11,1915. Application filed December 31,1913. Serial No. 809,642. To all whom it may concern: Be it known…
Phonograph · Patents
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