United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 278
PATENTED MAT 12, 1903. No. 727,921. V. H. EMERSON & F. L. CAPPS. AUTOMATIC SOUND RECORDER. APPLIOATIOH FILED GOT. 14, 1902. 50 MODEL. Fig.l Fig. 2 … ^FrankLCapps I h --, PErreHs co.. photo-lh
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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