Electric heating element
United States Patent 2557530
US Patent References:
/0923425.html
- - 0923425

/1279146.html
- - 1279146

/1291106.html
- - 1291106

/1323576.html
- - 1323576

Method of forming tungsten carbide
- - 1839518


Inventors:
Bancroft, George H.
Publication Date:
06/19/1951
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Assignee:
EASTMAN KODAK CO
Primary Class:
373/117
Other Classes:
338/333, 338/217
International Classes:
C23C14/26
US Patent References:
2013755Electric furnace
2100045Deposition of metallic films from metal vaporized in vacuo
2430994Method of coating lenses
2433922Apparatus for treating surfaces
Foreign References:
FR5508A
FR411417A
CH83973A