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

https://edisondigital.rutgers.edu/document/D8020ZAE

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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

Date

1880-01-19

Type

Folder/Volume ID

D8020-F

Microfilm ID

53:603

Document ID

D8020ZAE

Publisher

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