[PT032ABP1], Technical Note, Thomas Alva Edison, 1889
https://edisondigital.rutgers.edu/document/PT032ABP1
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Title
[PT032ABP1], Technical Note, Thomas Alva Edison, 1889
Editor's Notes
sketches from patent file for U.S. Pat. 437,425 phonograph recorder, executed 2/1/89
Supplied year
Author
Date
1889-00-00
Type
Folder/Volume ID
PT032ABP-F
Microfilm ID
114:609
Document ID
PT032ABP1
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University