[D8547G], Letter from Alfred Berthon, Societe Generale des Telephones to Thomas Alva Edison, January 28th, 1885
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Title
[D8547G], Letter from Alfred Berthon, Societe Generale des Telephones to Thomas Alva Edison, January 28th, 1885
Editor's Notes
Wants TAE's views on anti-induction device for which TAE has an additional certificate to French patent dated 12/19/1877; "Have you made use of this device and have you tested it in a practical manner." Warns Edison that "Marcel Desprez and Cornelius Herz have 'reinvented' this device" and are about to seek a patent in the U.S. [MARG.: "I tried this device once only on a telephone line in which there was tremendous induction from a primary Telegh circuit. Using reverse currents succeeded in nearly stopping the induction & left the telephone business about that time & have never touched it since--E]
Recipient
Mentioned
Date
1885-01-28
Type
Folder/Volume ID
D8547-F
Microfilm ID
78:829
Document ID
D8547G
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University