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[NV12172] Technical Note, September 21st, 1877

Title: [NV12172] Technical Note, September 21st, 1877
Editor's Notes: More telephone designs
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-09-21
Type: Technical Note
Subject: Telephone
Folder ID: NV12-F
Microfilm ID: 4:81
Document ID: NV12172
URL: https://edisondigital.rutgers.edu/document/NV12172
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 4