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[PT005B1], Patent Specification, Thomas Alva Edison, April 9th, 1873

Title: [PT005B1], Patent Specification, Thomas Alva Edison, April 9th, 1873
Author: Edison, Thomas Alva
Mentioned: Munn & Co; Goepel, Paul
Date: 1873-04-09
Type: Patent Specification
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: PT005B-F
Microfilm ID: 8:586
Document ID: PT005B1
URL: https://edisondigital.rutgers.edu/document/PT005B1
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 8