United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 108
IT/IESSES: «.^3 INVMIT0R5 ^£iS:cf^^Ju. ^i&^ ATTORNEYS. THi aaams mtcos Co., wioTo-irTno., »umi<c:Ta«, o. e (No Model.) 4 Sheets—Sheet 3. L. ROSENTHAL & S. FRANK. APPARATUS FOR REPRODUCING SOUNDS. No. 474,410. Patented May 10, 1892. … ^nc^u.^ JT^^Ls^ ^Q^HIt- ATTORNEYfS. . PHOTO-LITMO., WASHINQTON, D. C. (No Model.) 4 Sheets—Sheet 4. L. ROSENTHAL & S. FRANK. APPARATUS FOR REPRODUCING SOUNDS. No. 474,410. Patented May 10, 1892.
Phonograph · Patents
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