Filter for subterranean use
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Jun 6, 1997
filing date -
Jun 12, 1996
priority date (Note) -
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Abstract
A filter capable of being used in subterranean environments includes a filter medium. An erosion barrier is disposed along a common flow path with the filter medium for preventing erosion by particles in a fluid being filtered.
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