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[NS7704ZAR], Technical Note, Charles Batchelor, Thomas Alva Edison, May 11th, 1877

Title: [NS7704ZAR], Technical Note, Charles Batchelor, Thomas Alva Edison, May 11th, 1877
Editor's Notes: sexty 7 pp: pressure relays; relay details; "thermo indicator";
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-05-11
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:561
Document ID: NS7704ZAR
URL: https://edisondigital.rutgers.edu/document/NS7704ZAR
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