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[NV11047] Technical Note, April 2nd, 1877

Title: [NV11047] Technical Note, April 2nd, 1877
Editor's Notes: four-tube speaker
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-04-02
Type: Technical Note
Subject: Telephone
Folder ID: NV11-F
Microfilm ID: 3:932
Document ID: NV11047
URL: https://edisondigital.rutgers.edu/document/NV11047
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 3