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[PT032AAW], Patent Application, Thomas Alva Edison, March 3rd, 1888

Title: [PT032AAW], Patent Application, Thomas Alva Edison, March 3rd, 1888
Editor's Notes: Objective is to make a process to duplicate phonographic record by creating a negative of the recording, which can be impressed on blanks. The process of knurling will be added to the process of the duplication of phonograms. [4 figs; 2 claims]
Author: Edison, Thomas Alva
Date: 1888-03-03
Type: Patent Application
Subject: Cylinder record and duplicating technology
Folder ID: PT032AAW-F
Microfilm ID: 114:306
Document ID: PT032AAW
URL: https://edisondigital.rutgers.edu/document/PT032AAW
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 114

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