[NS7704ZBH], Technical Note, Charles Batchelor, Thomas Alva Edison, June 7th, 1877
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Title
[NS7704ZBH], Technical Note, Charles Batchelor, Thomas Alva Edison, June 7th, 1877
Editor's Notes
sexty, 3 pp.: "Compensation by induction and Secondary Magnet" - odd curved perm. mag.; fr. 628 has telph. on bottom (gelatin or Isinglass re mix with carbon); another circuit
Date
1877-06-07
Type
Folder/Volume ID
NS7704-F
Microfilm ID
7:627
Document ID
NS7704ZBH
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University