United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 106
ko/ia^^yA^ Tf^ATTORNElfS. THl MOARlS PCTtBB CO.. PHOTO-LlT (No Model.) 4 Sheets—Sheet 2. L. ROSENTHAL & S. FRANK. APPARATUS FOR REPRODUCING SOUNDS. No. 474,410. Patented May 10, 1892.
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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