[PAT274112], Patent Issued, George D'Infreville, March 20th, 1883
https://edisondigital.rutgers.edu/document/PAT274112
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Title
[PAT274112], Patent Issued, George D'Infreville, March 20th, 1883
Author
Date
1883-03-20
Type
Folder/Volume ID
PA6-F
Document ID
PAT274112
Rights
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Alternative Title
Telegraph Apparatus