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[NE1676135], Technical Note, Thomas Alva Edison, August 20th, 1875

Title: [NE1676135], Technical Note, Thomas Alva Edison, August 20th, 1875
Author: Edison, Thomas Alva
Date: 1875-08-20
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NE1676-F
Microfilm ID: 3:117
Document ID: NE1676135
URL: https://edisondigital.rutgers.edu/document/NE1676135
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 3