FILTER ELEMENT COMPRISING A FRAME ELEMENT
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United States of America Patent
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Issued Date -
Aug 30, 2018
app pub date -
Oct 13, 2016
filing date -
Nov 20, 2015
priority date (Note) -
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Abstract
A filter element includes a boot made of nonwoven fabric. A penultimate pleat wall and/or a final pleat wall and/or a final pleat ridge is or are at least partially overlapped by a frame element made of nonwoven fabric. In an embodiment, the frame element overlaps the penultimate pleat wall and the final pleat wall and the final pleat ridge common thereto.
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