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[MBP018], Patent Issued, Thomas Alva Edison, September 20th, 1879

Title: [MBP018], Patent Issued, Thomas Alva Edison, September 20th, 1879
Editor's Notes: British Pat 3794 (1879). Telephone annunciators.
Author: Edison, Thomas Alva
Date: 1879-09-20
Type: Patent Issued
Subject: Telephone
Folder ID: MBP-F
Microfilm ID: 92:129
Document ID: MBP018
URL: https://edisondigital.rutgers.edu/document/MBP018
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 92