Electric heating furnace and method of heating
United States Patent 2896004
US Patent References:
Electric furnace
- - 1432442

Electric furnace
- - 2035306

Electric heat treating furnace
- - 2611790


Inventors:
Duffy, John R.
Holz, George W.
Wilford, Lillienberg August
Publication Date:
07/21/1959
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Assignee:
LINDBERG ENGINEERING COMPANY
Primary Class:
373/130
Other Classes:
373/134, 338/51, 219/553, 338/280, 219/422
International Classes:
H05B3/64; H05B3/62
Foreign References:
AU125292B
GB643256A