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[NS7704ZBH], Technical Note, Charles Batchelor, Thomas Alva Edison, June 7th, 1877

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
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-06-07
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:627
Document ID: NS7704ZBH
URL: https://edisondigital.rutgers.edu/document/NS7704ZBH
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 7