Particulate sifter
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United States of America Patent
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Apr 20, 2010
Grant Date -
Jan 22, 2009
app pub date -
Apr 22, 2005
filing date -
Apr 23, 2004
priority date (Note) -
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Abstract
may be rotated forcibly by an electric motor as a driving source or may be rotated by kinetic energy of particulate-air mixture agitated by rotating blades without a driving source.
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