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[PT5120A], Technical Note, Thomas Alva Edison, December 4th, 1919

Title: [PT5120A], Technical Note, Thomas Alva Edison, December 4th, 1919
Author: Edison, Thomas Alva
Mentioned: Hardy, William Abbott
Date: 1919-12-04
Type: Technical Note
Subject: Patent application; Phonograph
Folder ID: PT5120-F
Microfilm ID: 247:438
Document ID: PT5120A
URL: https://edisondigital.rutgers.edu/document/PT5120A
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 247