Helmet with detecting circuit mounted thereon for indicating approach to an energized powerline
United States Patent 3309690
US Patent References:
Electrical testing and detecting apparatus
- - 2109189
Fault-locating device
- - 2338245
Compact radio receiver
- - 2554270
Electrical power line warning device for vehicles with extended booms
- - 2615969
Fault detector
- - 2651021
Electrical testing and detecting apparatus
- - 2109189
Fault-locating device
- - 2338245
Compact radio receiver
- - 2554270
Electrical power line warning device for vehicles with extended booms
- - 2615969
Fault detector
- - 2651021
Inventors:
Moffitt, Melville M.
Publication Date:
03/14/1967
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Assignee:
Moffitt, Melville M.
Primary Class:
Other Classes:
455/269, 324/72, 324/133, 324/67, 455/351, 340/565, 340/654
International Classes:
G08B3/10; G08B3/00
US Patent References: