Method of Making Phonogram-Blanks, April 02, 1889

Title: Method of Making Phonogram-Blanks, April 02, 1889
Author: Thomas A. Edison
Date Executed: 1888-10-15
Date Filed: 1888-10-17
Date Issued: 1889-04-02
Type: Patent Issued
Subject: Phonographs and Sound Recording
Document ID: PAT400650
Has Format: https://iiif.archive.org/iiif/edisonpatent400650/manifest.json
Rights: Edison's patents are in the public domain and have been made available through the generosity of David Kovanen.
Publisher: The Thomas A. Edison Papers