[D7919ZED], Letter from J Dyle to Thomas Alva Edison, December 23rd, 1879

Item

Abstract

Would TAE like vacuum pump on which he is co-patentee, which produces perfect vacuum? Marg: "There never has been vacuum produced in this country that approached anywhere near vac wh is necessary for me to produce. We prod a vacuum in 3 minutes wh when the mercury guage becomes useless as a measure for such rarification wh continues an hour after and measure by what is called the lead guage."

Author

Date

1879-12-23

Decade

1870-1879

Type

Identifier

D7919ZED

Folder Set

D7919

Title

[D7919ZED], Letter from J Dyle to Thomas Alva Edison, December 23rd, 1879

Microfilm ID

50:187

Publisher

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