[NV14084], Technical Note, Thomas Alva Edison, Charles Batchelor, April 12th, 1878
https://edisondigital.rutgers.edu/document/NV14084
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Title
[NV14084], Technical Note, Thomas Alva Edison, Charles Batchelor, April 12th, 1878
Editor's Notes
circuit diagram with multiple coils for single hand unit; witnessed by an R. MacKintosh who is he?
Date
1878-04-12
Type
Subject
Folder/Volume ID
NV14-F
Microfilm ID
4:228
Document ID
NV14084
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University