[D8020ZAE], Letter from George Clark to Thomas Alva Edison, January 19th, 1880
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Title
[D8020ZAE], Letter from George Clark to Thomas Alva Edison, January 19th, 1880
Editor's Notes
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
Recipient
Date
1880-01-19
Type
Subject
Folder/Volume ID
D8020-F
Microfilm ID
53:603
Document ID
D8020ZAE
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University