[PT032AAU], Patent Application, Thomas Alva Edison, February 20th, 1888
https://edisondigital.rutgers.edu/document/PT032AAU
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Title
[PT032AAU], Patent Application, Thomas Alva Edison, February 20th, 1888
Editor's Notes
Patent appl wax phonogram blanks: object to improve articulation of phonograph by burnishing wax surface. Addresses tool marks seen under magnifying glass that produce foreign sounds in reproducer. Filed 2 March 1888.
Author
Date
1888-02-20
Type
Folder/Volume ID
PT032AAU-F
Microfilm ID
114:284
Document ID
PT032AAU
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University