Water filter

Details Water filter Water filter

1996-04-23

1997-11-04

Douglas, Alan P.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Treatment

2301

Patent

active

D03859452

REFERENCES:
patent: D311570 (1990-10-01), Woodruff
patent: D312863 (1990-12-01), Hankammer
patent: D336011 (1993-06-01), Bannigan
patent: D354796 (1995-01-01), Smith
patent: D358868 (1995-05-01), Hembree et al.
patent: 4172796 (1979-10-01), Corder
patent: 4556484 (1985-12-01), Hunter et al.
patent: 5320752 (1994-06-01), Clack et al.
patent: 5324434 (1994-06-01), Oikawa et al.
patent: 5350513 (1994-09-01), Markowitz
patent: 5536394 (1996-07-01), Lund et al.

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