[D7937ZDT], Letter from Sigmund Bergmann to Charles Batchelor, November 21st, 1879
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Title
[D7937ZDT], Letter from Sigmund Bergmann to Charles Batchelor, November 21st, 1879
Editor's Notes
Sends relay telephone "with slight alteration on the relay, as I showed Mr Kreusi--as I was afraid they would stick to the magnets, I put a little weight on the pin." Let him know if the whole instrument is satisfactory.
Author
Recipient
Mentioned
Date
1879-11-21
Type
Subject
Folder/Volume ID
D7937-F
Microfilm ID
52:141
Document ID
D7937ZDT
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University