United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1213
Fiy.15 <. … 4lt££?t e<f4e<r.- Dr?&ise?ttcyt t/*Qj£><*4~G& M. DE PEZZER. INDICATING DEVICE FOR PHONOGRAPHY AND ITS APPLICATION. APPLICATION FILED JULY 26, 1910. 1,166,115. Patented Dec. 28,1915. 6 SHEETS-SHEET 6.
Phonograph · Patents
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