チャールズ・サムナー・テンター
アメリカ合衆国特許第 374,133号 Paper Cylinder for Graphophonic Records (helically wound), filed April 1887, issued November 1887
アメリカ合衆国特許第 375,579号 Apparatus for Recording and Reproducing Speech and Other Sounds (with treadle drive designed for dictation), filed July 1887, issued December 1887
アメリカ合衆国特許第 380,535号 Graphophone (with duplicate transcription), filed December 1887, issued April 1888
アメリカ合衆国特許第 421,450号 Graphophone Tablet (hard "ozocerite" (carnauba wax) cylinder coating), filed November 1887, issued February 1890
アメリカ合衆国特許第 428,646号 Machine for the Manufacture of Wax-coated Tablets for Graphophones (helically wound paper tubes), filed June 1889, issued May 1890