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[NS7810E], Technical Note, Thomas Alva Edison, September 3rd, 1878

Title: [NS7810E], Technical Note, Thomas Alva Edison, September 3rd, 1878
Editor's Notes: way duplex
Author: Edison, Thomas Alva
Date: 1878-09-03
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7810-F
Microfilm ID: 7:909
Document ID: NS7810E
URL: https://edisondigital.rutgers.edu/document/NS7810E
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
License: CC0 1.0 Universal