[D7941ZEX], Letter from Thomas Alva Edison to Edward Hibberd Johnson, October 1st, 1879

https://edisondigital.rutgers.edu/document/D7941ZEX

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Title

[D7941ZEX], Letter from Thomas Alva Edison to Edward Hibberd Johnson, October 1st, 1879

Editor's Notes

Notes on Brewer & Jensen report to Valance & Valance; it misinterprets teleph pat. Impts of controlling induction. Phono is "legit part" of telephephone system of reproducing sound at distance. Willing to disclaim phono if it jeopardizes teleph patent. Quotes report comparing phono to emg. Carbon button finely divided. Can throw out claims 22 & 24. Misinterpret claim 18 (emg).

Date

1879-10-01

Type

Folder/Volume ID

D7941-F

Microfilm ID

52:758

Document ID

D7941ZEX

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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