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

Item

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Abstract

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

Identifier

D8123ZBW

Folder Set

D8123

Title

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

Microfilm ID

57:888

Publisher

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

Timestamp

May 17, 1881