Filter system

Details Filter system Filter system

2007-07-31

2007-07-31

Webster, Robin (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Treatment

Design Patent

active

29252781

CLAIM:
The ornamental design for a filter system, as shown and described.

REFERENCES:
patent: 3598243 (1971-08-01), Gutkowski
patent: D306754 (1990-03-01), Petrucci et al.
patent: 5045197 (1991-09-01), Burrows
patent: 5122265 (1992-06-01), Mora et al.
patent: D407462 (1999-03-01), Bishop et al.
patent: D454615 (2002-03-01), Neal
patent: 6740235 (2004-05-01), Gill

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