[PT014AAL], Letter from U.S. Patent Office. Commissioner to Dyer and Seely, Thomas Alva Edison, October 26th, 1887

Item

Author

U.S. Patent Office. Commissioner

Recipient

Dyer and Seely
Edison, Thomas Alva

Date

1887-10-26

Decade

1880-1889

Type

Letter

Subject

Patent application
Phonoplex and railroad telegraphy

Identifier

PT014AAL

Folder Set

PT014

Title

[PT014AAL], Letter from U.S. Patent Office. Commissioner to Dyer and Seely, Thomas Alva Edison, October 26th, 1887

Microfilm ID

45:578

Rights

Thomas Edison National Historical Park

Publisher

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

Item sets

Case 663 Railway Signaling (1886)