[NS7802Q], Technical Note, Thomas Alva Edison, John Kruesi, September 6th, 1878

Item

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Abstract

microphone drawing with dimensions

Date

1878-09-06

Decade

1870-1879

Identifier

NS7802Q

Folder Set

NS7802

Title

[NS7802Q], Technical Note, Thomas Alva Edison, John Kruesi, September 6th, 1878

Microfilm ID

7:775

Publisher

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

Timestamp

September 6, 1878