Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 5, 2008
Patent Application Number
11162549
Date Filed
September 14, 2005
Patent Citations Received
Patent Primary Examiner
Patent 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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