[N022171], Technical Note, Charles Batchelor, Thomas Alva Edison, July 4th, 1879
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Title
[N022171], Technical Note, Charles Batchelor, Thomas Alva Edison, July 4th, 1879
Editor's Notes
new Edison telephone - eh?; fr. 75ff a little clearer drawings of this design, adjusting pressure on rotating wheel, possibly emg
Mentioned
Date
1879-07-04
Type
Subject
Folder/Volume ID
N022-F
Microfilm ID
31:73
Document ID
N022171
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University