Folded-three-dimensional object, particularly a filter element
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United States of America Patent
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Jun 6, 2006
Grant Date -
Jun 13, 2002
app pub date -
Oct 5, 2001
filing date -
Oct 6, 2000
priority date (Note) -
Expired
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Abstract
A three-dimensional object folded from a flat work piece, particularly a filter element folded from a nonwoven fabric, characterized in that the three-dimensional object (20) is made up of several rows (5, 6, 7) of hollow pyramid elements (30) that are joined in rows and nested into one another.
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