[D8430Q], Letter from Francis Robbins Upton to Thomas Alva Edison, April 22nd, 1884

https://edisondigital.rutgers.edu/document/D8430Q

View document with UniversalViewer   → View document on Archive.org  → Re-use this digital object via a IIIF manifest

Title

[D8430Q], Letter from Francis Robbins Upton to Thomas Alva Edison, April 22nd, 1884

Editor's Notes

In reply to TAE's of 15th inst. I submit the following table proposed bhy Howell. 500 lamps burned at constant pressure and giving an average life of 600 hours would probably break as follows. The lamps being renewed as broken. [Table of Total Hours run and Total Lamps broken, with comments follows]

Mentioned

Date

1884-04-22

Decade

1880-1889

Type

Folder/Volume ID

D8430-F

Microfilm ID

73:534

Document ID

D8430Q

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Download CSV | JSON