Pump apparatus and methods of making and using same
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United States of America Patent
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Feb 5, 2008
Grant Date -
Mar 15, 2007
app pub date -
Sep 14, 2005
filing date -
Sep 14, 2005
priority date (Note) -
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Abstract
Pump apparatus and methods of making and using same are disclosed. One inventive apparatus includes at least two pump stages having different performance characteristics combined in series to substantially match an intended pumping application. An inventive method includes selecting two or more pump stages having different performance characteristics that when combined in series overcome limitations of at least one of the pump stages.
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