Vacuum switch
United States Patent 2966569
US Patent References:
Vacuum switch
- - 1892538

Circuit interrupting device
- - 2261020

Vacuum switch
- - 2740867

Vacuum switch
- - 2740869

Adjustable spark gap
- - 2740915


Inventors:
Emmett, Jennings JO.
Publication Date:
12/27/1960
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Assignee:
JENNINGS RADIO MFG CORP
Primary Class:
218/135
Other Classes:
313/146, 361/2
International Classes:
H01H33/66
US Patent References:
2773154Electric switch
Foreign References:
GB314352A
DE407725C
DE563140C
DE615965C
DE636086C
GB787846A