[PT005B], Patent Application, Thomas Alva Edison, April 9th, 1873

Item

Author

Edison, Thomas Alva

Date

1873-04-09

Decade

1870-1879

Type

Patent Application

Subject

Multiple telegraphy (duplex, quadruplex)

Identifier

PT005B

Folder Set

PT005B

Title

[PT005B], Patent Application, Thomas Alva Edison, April 9th, 1873

Microfilm ID

8:583

Rights

Thomas Edison National Historical Park

Publisher

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

Item sets

Abandoned Applications, Case B