Liquid filter arrangement and methods

Details Liquid filter arrangement and methods Liquid filter arrangement and methods

2011-06-07

2011-06-07

Lithgow, Thomas M (Department: 1776)

Liquid purification or separation

With repair or assembling means

Removable treatment part with normally disabled flow controller

C210S235000, C210S232000, C210S136000, C210S450000

Reexamination Certificate

active

07955502

ABSTRACT:
A liquid filter arrangement is provided, as well as methods of assembly and use. The liquid filter arrangement includes an anti-drain back valve assembly therein. Advantageous features, relating to a preferred filter cartridge and preferred anti-drain back valve arrangement, are provided.

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Allowed claims corresponding to U.S. Appl. No. 11/630,705.
PCT Search Report and Written Opinion, Sep. 30, 2005.

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