Letter from U.S. Patent Office. Commissioner, Edgar Martin Marble to U.S. Interior Dept. Secretary, March 29th, 1881

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Author(s)

U.S. Patent Office. Commissioner
Marble, Edgar Martin
Recipient(s)
U.S. Interior Dept. Secretary
Others Mentioned
U.S. Patent Office
Nicholson, Henry C
Edison, Thomas Alva

Subject(s)

Multiple telegraphy (duplex, quadruplex)
Patent application

Dated

1881-03-29 (1881)

Associated Images

3

Identifier

QD005027 (legacy)

Rights

Thomas Edison National Historical Park

Publisher

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

Citation

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