[N014181], Technical Note, Francis Robbins Upton, Thomas Alva Edison, February 14th, 1879
https://edisondigital.rutgers.edu/document/N014181
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Title
[N014181], Technical Note, Francis Robbins Upton, Thomas Alva Edison, February 14th, 1879
Editor's Notes
drawing "Electric pen vibrator To utilize a current by breaking the connection and having a jump spark from Pt. to Carbon"
Date
1879-02-14
Type
Subject
Folder/Volume ID
N014-F
Microfilm ID
30:466
Document ID
N014181
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University