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[MBN002059], Technical Note, Charles Batchelor, June 1st, 1878

Title: [MBN002059], Technical Note, Charles Batchelor, June 1st, 1878
Editor's Notes: microphone; arrangement of Hughes is infringement
Author: Batchelor, Charles
Mentioned: Hughes, David Edward
Date: 1878-06-01
Type: Technical Note
Subject: Patents; Telephone; Microphone and other acoustic devices
Folder ID: MBN002-F
Microfilm ID: 90:686
Document ID: MBN002059
URL: https://edisondigital.rutgers.edu/document/MBN002059
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 90