Air duct valve arrangement
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United States of America Patent
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N/A
Issued Date -
Jun 12, 2003
app pub date -
May 31, 2002
filing date -
May 31, 2001
priority date (Note) -
Abandoned
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Abstract
An air duct valve arrangement for use ain an air circulation system comprising an air handler unit and an air treatment unit. The valve arrangement being disposed to prevent short-circuiting of the air treatment unit, but not to hinder the operation of the air handler unit.
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