[D8020ZIV1], Patent Issued, Benjamin F Card, December 30th, 1879
https://edisondigital.rutgers.edu/document/D8020ZIV1
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Title
[D8020ZIV1], Patent Issued, Benjamin F Card, December 30th, 1879
Editor's Notes
B. F. Card patent of meter for measuring electricity (Dec 30 1879). [Complex device using induction in wire helix to move gear wheels attached to indicator.]
Author
Date
1879-12-30
Type
Subject
Folder/Volume ID
D8020-F
Microfilm ID
53:943
Document ID
D8020ZIV1
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University