Oval filter

Details Oval filter Oval filter

1996-04-26

1999-11-30

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

2304

Patent

active

D04172680

REFERENCES:
patent: 3807150 (1974-04-01), Maracle
patent: 3878594 (1975-04-01), Minor, Jr. et al.
patent: 3966646 (1976-06-01), Noakes et al.
patent: 4289513 (1981-09-01), Brownhill et al.
patent: 4430223 (1984-02-01), Miyakawa et al.
patent: 4439321 (1984-03-01), Taki et al.
patent: 4498989 (1985-02-01), Miyakawa et al.
patent: 5304351 (1994-04-01), Tanaka et al.

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