[PT032ABL], Patent Application, Thomas Alva Edison, January 10th, 1889
https://edisondigital.rutgers.edu/document/PT032ABL
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Title
[PT032ABL], Patent Application, Thomas Alva Edison, January 10th, 1889
Editor's Notes
Folder wrapper, oath, and typed and signed copy of Method of Making Phonogram Blanks executed 1/10/89. Key text: "The object of my invention is to produce cylindrical phonogram blanks which shall hafe a perfectly true inner surface, and which can readily be placed upon and removed from the cylinder of the phonograph.##The main feature of my invention consists in first forming a cylindrical body of cord, thread or like material wound into cylindrical form, and then covering such body with the wax or other mateiral which is to receive the impressions of the phonograph."
Author
Date
1889-01-10
Type
Folder/Volume ID
PT032ABL-F
Microfilm ID
114:545
Document ID
PT032ABL
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University