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Sound-record and method of making same: specification forming part of Letters Patent No. 689,350, dated 1901 December 17
Sound-record and method of making same: specification forming part of Letters Patent No. 689,350, dated 1901 December 17
Sound-record and method of making same: specification forming part of Letters Patent No. 548,623, dated October 29, 1895
Sound-record and method of making same: specification forming part of Letters Patent No. 548,623, dated October 29, 1895
Sound-record and method of making same: specification forming part of Letters Patent No. 689,350, dated 1901 December 17
Sound-record and method of making same: specification forming part of Letters Patent No. 548,623, dated October 29, 1895
Sound-record and method of making same: specification forming part of Letters Patent No. 689,350, dated 1901 December 17
Patentschrift no. 53622 : Neuerung an dem durch das patent 45048 geschutzen Verfahren und Aparat fur das Registriren und Wiederhervorbringen von Tonen
Subject File: Patents--By Wright Brothers--USA--filed 17 February 1908, patented 21 March 1911
Patent Case File No. 1,534,353, Fractured Blocks and Method of Making the Same, Inventor Herman Besser - - fae47c4691221add2555a9ece6db6ffd (page 19)
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