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United States of America Patent
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Mar 16, 2004
Grant Date -
Jun 27, 2002
app pub date -
Dec 19, 2001
filing date -
Dec 25, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A filter includes upper and lower filter members that form at least two opposed surfaces that face each other, a porous member contained in the filter member, and a coupling member having an opening that is open to the porous member so that the porous member communicates with the coupling member. In the filter, the filter member removes foreign matters contained in liquid, and the liquid from which the foreign matters are removed is discharged through the porous member and the coupling member.
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