Permeable structure
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United States of America Patent
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Aug 19, 1997
Grant Date -
N/A
app pub date -
Nov 10, 1993
filing date -
Nov 12, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the permeable structure, which is built up of sheets, continuous channels are arranged in rows and between the rows of channels are formed flow spaces which at opposite sides are bounded bit cover plates. In the flow spaces (4) at least two successive transverse bridges (6) are arranged on the same level, the transverse bridges (6) in at least half of the sheets having a different length (B) and the channels (1) extending essentially perpendicular to the flow spaces (4).
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