US Patent 7597219 Rotary valve for handling solid particulate material
Is a
Date Filed
December 16, 2005
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Date of Patent
October 6, 2009
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Patent Application Number
11303612
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Patent Inventor Names
Michael W. Johnson
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Alvin L. Miller
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John Hasselbach
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Robert J. O'Leary
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Patent Jurisdiction
Patent Number
Patent Primary Examiner
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