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[N319233], Technical Note, Thomas Alva Edison, April 21st, 1886

Title: [N319233], Technical Note, Thomas Alva Edison, April 21st, 1886
Editor's Notes: drawing "Phonoplex Short cktg phone partially to weaken outgoing signals & also to only use battery while sending a dot or dash"; p. 234 drawings phonoplex; p. 235 drawing "Phonoplex Copy"; pp, 236-58 phonoplex drawings some dated
Author: Edison, Thomas Alva
Date: 1886-04-21
Type: Technical Note
Subject: Phonoplex and railroad telegraphy
Folder ID: N319-F
Microfilm ID: 43:279
Document ID: N319233
URL: https://edisondigital.rutgers.edu/document/N319233
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 43