[D7903ZDP], Letter from Thomas Alva Edison to Hamilton McKown Twombly, May 6th, 1879

Item

Abstract

Brooks patent may not hold; anticipated by 1861 publication. "At least broad claim cannot be taken on liquid insulator."

Author

Edison, Thomas Alva

Recipient

Twombly, Hamilton McKown

Mentions

Brooks, David

Date

1879-05-06

Decade

1870-1879

Type

Letter

Subject

Patents
Cables, feeders, and other exterior elements

Identifier

D7903ZDP

Folder Set

D7903

Title

[D7903ZDP], Letter from Thomas Alva Edison to Hamilton McKown Twombly, May 6th, 1879

Microfilm ID

49:224

Rights

Thomas Edison National Historical Park

Publisher

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

Item sets

(D-79-03) Edison, T.A.