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[MBN002039] Technical Note, June 6th, 1877

Title: [MBN002039] Technical Note, June 6th, 1877
Editor's Notes: Improved speaking telegraph better than Bell's -- EMG receiver -- uses compressed plumbago for variable resistance
Author: Batchelor, Charles
Mentioned: Bell, Alexander Graham; Edison, Thomas Alva
Date: 1877-06-06
Type: Technical Note
Subject: Telephone; Electromotograph
Folder ID: MBN002-F
Microfilm ID: 90:676
Document ID: MBN002039
URL: https://edisondigital.rutgers.edu/document/MBN002039
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 90