Sound-Modifying Device, October 17, 1916

Item

Title
Sound-Modifying Device, October 17, 1916
Author
Thomas A. Edison
Date Executed
1914-04-21
Date Filed
1914-04-25
Date Issued
1916-10-17
Type
Patent Issued
Subject
Phonographs and Sound Recording
Document ID
PAT1201449
Has Format
https://iiif.archive.org/iiif/edisonpatent1201449/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
Related Materials
Item Set PT5079-F