Switch condition indicator
United States Patent 3175047
US Patent References:
Means for detecting small electric currents
- - 1455458
Means for indicating the presence of radio frequency fields
- - 2395850
Means for detecting small electric currents
- - 1455458
Means for indicating the presence of radio frequency fields
- - 2395850
Inventors:
Willy, Borberg
Publication Date:
03/23/1965
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Export Citation:
Assignee:
GEN PRECISION INC
Primary Class:
Other Classes:
381/79, 381/78, 340/654
International Classes:
G08B5/36; G08B5/22
Foreign References:
| AU226427B | ||||
| GB815288A |