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[NS7802Q], Technical Note, Thomas Alva Edison, John Kruesi, September 6th, 1878

Title: [NS7802Q], Technical Note, Thomas Alva Edison, John Kruesi, September 6th, 1878
Editor's Notes: microphone drawing with dimensions
Author: Kruesi, John; Edison, Thomas Alva
Date: 1878-09-06
Type: Technical Note
Subject: Microphone and other acoustic devices
Folder ID: NS7802-F
Microfilm ID: 7:775
Document ID: NS7802Q
URL: https://edisondigital.rutgers.edu/document/NS7802Q
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 7
License: CC0 1.0 Universal