[D7941ZKN], Letter from Edward Hibberd Johnson to Thomas Alva Edison, December 29th, 1879

Item

Abstract

Waterhouse wants dates of TAE's steps inventing carbon trans & other dates re microphones. Also needs transmitter made in accordance with 1877 pat. What does "pressure" mean in spec? Barton thinks TAE's use of "pressure" dissimilar from Hughes' "contact." Needs to demonstrate how trans actually works, not just theory. How about getting original insts which Adams gave to Preece?

Date

1879-12-29

Decade

1870-1879

Type

Identifier

D7941ZKN

Folder Set

D7941

Title

[D7941ZKN], Letter from Edward Hibberd Johnson to Thomas Alva Edison, December 29th, 1879

Microfilm ID

52:1031

Publisher

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

Timestamp

December 29, 1879