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

Item

Abstract

mechanical microphone

Date

1878-07-06

Decade

1870-1879

Identifier

NS7802M

Folder Set

NS7802

Title

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

Microfilm ID

7:770

Publisher

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

Timestamp

July 6, 1878