[MBP034], Patent Issued, Thomas Alva Edison, December 8th, 1880
https://edisondigital.rutgers.edu/document/MBP034
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Title
[MBP034], Patent Issued, Thomas Alva Edison, December 8th, 1880
Editor's Notes
British Patent 5113 (1880). Telephone improvements: improvements in carbon transmitter diaphragm---means of pressing on carbon.
Author
Date
1880-12-08
Type
Subject
Folder/Volume ID
MBP-F
Microfilm ID
92:236
Document ID
MBP034
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University