[N068212], Technical Note, Ludwig K Boehm, August 23rd, 1880
https://edisondigital.rutgers.edu/document/N068212
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Title
[N068212], Technical Note, Ludwig K Boehm, August 23rd, 1880
Editor's Notes
looks like electrically heating iron wire over phos{phate?} in vac with spark jump. Jehl & Upton.
Author
Date
1880-08-23
Type
Subject
Folder/Volume ID
N068-F
Microfilm ID
34:711
Document ID
N068212
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University