Thomas A. Edison Papers Image Edition · Thomas Edison Papers Digital Edition

[NS7802O], Technical Note, John Kruesi, July 27th, 1878

Title: [NS7802O], Technical Note, John Kruesi, July 27th, 1878
Editor's Notes: measured drawing of megaphone
Author: Kruesi, John
Date: 1878-07-27
Type: Technical Note
Subject: Microphone and other acoustic devices
Folder ID: NS7802-F
Microfilm ID: 7:772
Document ID: NS7802O
URL: https://edisondigital.rutgers.edu/document/NS7802O
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