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[PT005E], Patent Application, Thomas Alva Edison, April 23rd, 1873

Title: [PT005E], Patent Application, Thomas Alva Edison, April 23rd, 1873
Author: Edison, Thomas Alva
Date: 1873-04-23
Type: Patent Application
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: PT005E-F
Microfilm ID: 8:657
Document ID: PT005E
URL: https://edisondigital.rutgers.edu/document/PT005E
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 8