[N020151], Technical Note, Charles Batchelor, Thomas Alva Edison, March 1st, 1879
https://edisondigital.rutgers.edu/document/N020151
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Title
[N020151], Technical Note, Charles Batchelor, Thomas Alva Edison, March 1st, 1879
Editor's Notes
Induction coil telephone design - worked well not as loud as bell but articulation perfect
Date
1879-03-01
Type
Subject
Folder/Volume ID
N020-F
Microfilm ID
30:1041
Document ID
N020151
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University