[D7903ZIV], Letter from Jesse H Bunnell to Thomas Alva Edison, October 13th, 1879

https://edisondigital.rutgers.edu/document/D7903ZIV

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Title

[D7903ZIV], Letter from Jesse H Bunnell to Thomas Alva Edison, October 13th, 1879

Editor's Notes

Briefly describes 5 alternate ways of constructing a circuit through a moving cage to signal its position. [Is this the elevator annnunciator?]

Date

1879-10-13

Decade

1870-1879

Type

Folder/Volume ID

D7903-F

Microfilm ID

49:420

Document ID

D7903ZIV

Publisher

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