[D7941ZEX], Letter from Thomas Alva Edison to Edward Hibberd Johnson, October 1st, 1879
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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 from docket, stamp, postmark
Author
Recipient
Mentioned
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