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[NS7803M], Technical Note, Thomas Alva Edison, Charles Batchelor, September 18th, 1878

Title: [NS7803M], Technical Note, Thomas Alva Edison, Charles Batchelor, September 18th, 1878
Editor's Notes: tsts of discs pressed singly and together
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1878-09-18
Type: Technical Note
Subject: Carbon, coal, glass, ceramics; Multiple telegraphy (duplex, quadruplex); Miscellaneous electrical technologies
Folder ID: NS7803-F
Microfilm ID: 7:794
Document ID: NS7803M
URL: https://edisondigital.rutgers.edu/document/NS7803M
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