[D8020ZAE], Letter from George Clark to Thomas Alva Edison, January 19th, 1880

Item

Abstract

Read it takes 1 hour to evaculate lamp bulb. Has built an entirely different air pump that's better & faster. Marg: "I think you misapprehend what kind of a vacuum pump is required. Nothing but a mercury pump can be used."

Author

Date

1880-01-19

Decade

1880-1889

Type

Identifier

D8020ZAE

Folder Set

D8020

Title

[D8020ZAE], Letter from George Clark to Thomas Alva Edison, January 19th, 1880

Microfilm ID

53:603

Publisher

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