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United States of America Patent
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Aug 5, 1986
Grant Date -
N/A
app pub date -
Apr 10, 1985
filing date -
Apr 12, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A filtration column having a bottom with reciprocally arranged peaks and troughs. Branched pipes with uniformly distributed small holes on their lower portions and surrounded by screens or wedge pipes lie in the troughs. The branched pipes lead to gathering pipes, which in turn lead to an outlet.
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Cited Art Landscape
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