Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 143
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i p. M. RAVENSKILDE. PHONOGRAPH. APPLICATION FILED OCT. 20. 1908. 948,675. Patented Feb. 8,1910. 7 SHEETS—SHEET 4. ////////////////// //////,>///../////^///////////////////////.///////////A … 948,675. p. M. RAVENSKILDE. PHONOGEAPH. APPLICATIOH TILED OCT. 20, 1908. Patented Feb. 8,1910. 7 SHEETS-SHEET 5.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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