Electrical precipitation apparatus
United States Patent 2554247
US Patent References:
Air conditioning
- - 2184782


Inventors:
Hedberg, Carl W. J.
Publication Date:
05/22/1951
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Assignee:
RESEARCH CORP
Primary Class:
96/73
Other Classes:
96/74
International Classes:
B03C3/74; B03C3/34
Foreign References:
DE339625C
GB323186A