Ballast construction
United States Patent 2509186

Inventors:
Feinberg, Albert E.
Publication Date:
05/23/1950
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Assignee:
ADVANCE TRANSFORMER CO
Primary Class:
315/138
Other Classes:
336/160, 315/97, 336/210, 336/165, 336/178, 315/DIG.002
International Classes:
H01F38/10; H01F38/00
US Patent References:
2382638Fluorescent lighting
2436951Luminescent tube system and apparatus
2465103Lighting system and apparatus