Fluid heater
United States Patent 2881301
US Patent References:
Electric oil well heater
- - 2548360

Heating apparatus
- - 2738409


Inventors:
Bowman, Hyman D.
Publication Date:
04/07/1959
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Assignee:
Bowman, Hyman D.
Primary Class:
392/471
Other Classes:
392/301, 166/60
International Classes:
F24H1/10