Pressure equilizing system
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United States of America Patent
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Jul 28, 2009
Grant Date -
Jun 23, 2005
app pub date -
Apr 14, 2004
filing date -
Dec 23, 2003
priority date (Note) -
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Abstract
An air handling system for an indoor space comprising a first forced indoor air treatment component, an input indoor air duct element and an output treated air duct element respectively coupling said first forced indoor air treatment component to said indoor space, a second forced air treatment component a stale air duct element coupled to said second forced air treatment component and to said input indoor air duct, a return air duct element coupling said second forced air treatment component to said output treated air duct element characterized in that said system comprises a secondary air path means for coupling said return air duct element to said input indoor air duct element.
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