Filter and production method thereof
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United States of America Patent
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Jun 1, 2004
Grant Date -
Jul 25, 2002
app pub date -
Dec 31, 2001
filing date -
Jan 24, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A seal member is attached to a peripheral edge portion of a filter body by being fused to semi-melted fibers that form the filter body when the semi-melted fibers are layered over a forming surface. Therefore, the formation of the filter body and the attachment of the seal member can be simultaneously accomplished.
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