United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 871
ATTORNEY COLUMBIA PLANOORAPH CO., WASHINGTON. D. C. A. C. DIEHL. SOUND BOX.APPLICATION FILED AUG. 31, 1910. 1,156,217. Patented Oct. 12,1915. 5 SHEETS-SHEET 3. 7A 76- … INVENTOR JUb&rJrC..Ztie/il. WITNESSES BY
Phonograph · Patents
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