[D8123ZBW], Letter from Francis Robbins Upton to Thomas Alva Edison, May 17th, 1881

https://edisondigital.rutgers.edu/document/D8123ZBW

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Title

[D8123ZBW], Letter from Francis Robbins Upton to Thomas Alva Edison, May 17th, 1881

Editor's Notes

Will start making lamps with ground internal parts. [Grinding as in machining, not electrical grounding (DH)] The 16 candle lamps passed 300 hour mark.

Date

1881-05-17

Decade

1880-1889

Type

Folder/Volume ID

D8123-F

Microfilm ID

57:888

Document ID

D8123ZBW

Publisher

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