Title:
Low water warning signal and cutoff system
United States Patent 2700153
US Patent References:
/1144101.html
- - 1144101
Circuit-closing device for oil-level indicators
- - 1496306
Relay device
- - 2249994
Fluid level indicator
- - 2329502
Steam boiler control
- - 2385161
/1144101.html
- - 1144101
Circuit-closing device for oil-level indicators
- - 1496306
Relay device
- - 2249994
Fluid level indicator
- - 2329502
Steam boiler control
- - 2385161
Inventors:
Huckabee, Luther H.
Publication Date:
01/18/1955
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Export Citation:
Assignee:
Huckabee, Luther H.
Primary Class:
Other Classes:
340/620, 73/304R, 361/194, 361/178, 340/450
International Classes:
G01F23/24
US Patent References:
| 2551225 | Cold cathode tube and circuits for the use thereof |