[NS7802M], Technical Note, Thomas Alva Edison, July 6th, 1878

https://edisondigital.rutgers.edu/document/NS7802M

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Title

[NS7802M], Technical Note, Thomas Alva Edison, July 6th, 1878

Editor's Notes

mechanical microphone

Date

1878-07-06

Folder/Volume ID

NS7802-F

Microfilm ID

7:770

Document ID

NS7802M

Publisher

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