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[NS7704ZBD], Technical Note, Charles Batchelor, Thomas Alva Edison, June 3rd, 1877

Title: [NS7704ZBD], Technical Note, Charles Batchelor, Thomas Alva Edison, June 3rd, 1877
Editor's Notes: sexty: caligs. + chem/emg thing?
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-06-03
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:619
Document ID: NS7704ZBD
URL: https://edisondigital.rutgers.edu/document/NS7704ZBD
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