Filtering apparatus
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United States of America Patent
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-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Aug 12, 1991
filing date -
Dec 12, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Filtering apparatus for the separation of microparticles such as bacteria has two planar sheets each with an array of laser drilled or etched pores. One or both of the sheets can be displaced relative to the other under feedback control to bring the pores into greater or lesser register. The effective pore size is thus varied to provide controlled selectivity.
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