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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 650
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J. MATSON. PHONOGRAPH TONE ARM CONNECTION. APPLICATION FILED OCT. 14, 1916. Patented Oct. 23, 1917. 1,243,853, 2 SHEETS-SHEET 1. /5 ^ *&.£>. 36 <?a* <ac * S3 y?o ^J^, 3. #c /o … .//^?3z^&>Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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