Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1997-08-21
1998-09-29
Lichtenstein, Lisa
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
D23366, D23379, 2304
Patent
active
D03989763
REFERENCES:
patent: D312686 (1990-12-01), Weber
patent: D361124 (1995-08-01), Pearce
patent: 2140017 (1938-12-01), Koch
Industrial Equipment News, Impeller, Aug. 1940.
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