[N134023], Technical Note, Thomas Alva Edison, October 25th, 1884

https://edisondigital.rutgers.edu/document/N134023

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Title

[N134023], Technical Note, Thomas Alva Edison, October 25th, 1884

Editor's Notes

Telephone: oil and powdwered carbon under diaphragm.

Date

1884-10-25

Subject

Folder/Volume ID

N134-F

Microfilm ID

38:438

Document ID

N134023

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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