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[NM020AAM], Technical Note, Thomas Alva Edison, October 21st, 1885

Title: [NM020AAM], Technical Note, Thomas Alva Edison, October 21st, 1885
Editor's Notes: sexduplex drawing
Author: Edison, Thomas Alva
Mentioned: Force, Martin N; Ott, John F
Date: 1885-10-21
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex); Phonoplex and railroad telegraphy
Folder ID: NM020-F
Microfilm ID: 44:698
Document ID: NM020AAM
URL: https://edisondigital.rutgers.edu/document/NM020AAM
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 44