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[NS7704ZAO], Technical Note, Thomas Alva Edison, Charles Batchelor, May 8th, 1877

Title: [NS7704ZAO], Technical Note, Thomas Alva Edison, Charles Batchelor, May 8th, 1877
Editor's Notes: sexty 3 pp: relay details "HoopLah";
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-05-08
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:532
Document ID: NS7704ZAO
URL: https://edisondigital.rutgers.edu/document/NS7704ZAO
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