Electric heater
United States Patent 2600486
US Patent References:
/0617375.html
- - 0617375

/0636203.html
- - 0636203

/0791691.html
- - 0791691

Resistance and impedance elements for electric circuits
- - 2075733

Heating thermal insulation
- - 2110660


Inventors:
Cox, Duncan B.
Publication Date:
06/17/1952
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Assignee:
Cox, Duncan B.
Primary Class:
338/212
Other Classes:
338/333, 338/260, 338/293, 219/553, 338/254, 439/875, 219/528
International Classes:
H05B3/36; H05B3/34
US Patent References:
2165970Electric heating system operating by heat radiation
2273941Process for the production of resistances
2504146Electrical heating device
Foreign References:
DE77262C
GB224648A
GB225627A
GB447453A
GB550433A