[D8220ZBE], Letter from B Hempstead to Thomas Alva Edison, December 26th, 1882

https://edisondigital.rutgers.edu/document/D8220ZBE

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Title

[D8220ZBE], Letter from B Hempstead to Thomas Alva Edison, December 26th, 1882

Editor's Notes

"What is the least battery force for one of your incandescent lamps, it to be lighted at the distance of a mile form the electric source." This is for flashing the light for signal purposes.

Author

Date

1882-12-26

Type

Folder/Volume ID

D8220-F

Microfilm ID

60:833

Document ID

D8220ZBE

Publisher

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