Filter Cartridge with Gas-Permeable Element
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United States of America Patent
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Issued Date -
Aug 22, 2013
app pub date -
Aug 22, 2012
filing date -
Feb 17, 2012
priority date (Note) -
Abandoned
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Abstract
A filter cartridge includes a filtering medium having a tubular cavity and an upper flange having an orifice communicating with the tubular cavity. A gas-permeable element closes off the orifice and has a greater permeability than the filtering medium, and less resistance to gas flow than the filtering medium.
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