VENTILATION ARRANGEMENTS
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United States of America Patent
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Issued Date -
Aug 1, 2013
app pub date -
Jul 18, 2011
filing date -
Jul 19, 2010
priority date (Note) -
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Abstract
A louvre arrangement for a ventilation arrangement. The louvre arrangement defining a plurality of passages into a housing. The passages extending generally upwardly inwards, and having an upper concave surface to urge air passing therethrough to turn inwardly and downwardly.
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