[D8332V], Letter from Francis Robbins Upton to Thomas Alva Edison, February 7th, 1883
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Title
[D8332V], Letter from Francis Robbins Upton to Thomas Alva Edison, February 7th, 1883
Editor's Notes
Haven't yet done life test on twisted fiber lamp. Tests on Swan lamps showed that at 64 volts varied fr 55 to 95 cp. "Their economy at such candle power make it so high as to prevent their use, at such a volt." "The Swiss order makes the future look extremely rosy. 10.000 @ 50 cts = $5000 One weeks work easy."
Author
Recipient
Mentioned
Date
1883-02-07
Type
Folder/Volume ID
D8332-F
Microfilm ID
67:151
Document ID
D8332V
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University