Title:
Electric heater for stock watering tanks
United States Patent 2576688
US Patent References:
/1117277.html
- - 1117277

/1209862.html
- - 1209862

Electrically heated apparatus
- - 1930551

Electric cooking appliance
- - 1994909

Stock watering tank heater
- - 2133388


Inventors:
Landgraf, Jacob T.
Publication Date:
11/27/1951
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Assignee:
HUDSON MFG CO H D
Primary Class:
392/498
Other Classes:
219/536, 392/501, 392/448, 219/526, 219/510, 219/541, 119/73, 219/523, 219/513
International Classes:
H05B3/80; H05B3/78
US Patent References:
2134675Frying apparatus
2208397Washing machine
2232998Temperature control for solutions