Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David Heaps0
Andrew G. L. Blackwood0
Date of Patent
April 24, 2007
Patent Application Number
10499369
Date Filed
December 17, 2002
Patent Primary Examiner
Patent abstract
A rotating vane vacuum pump has a secondary inlet (4) which permits additional suction after the primary inlet (3) has closed.
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