US Patent 7520017 Street sweeper recirculation flap
Patent 7520017 was granted and assigned to Tennant Company on April, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
September 6, 2002
0
Date of Patent
April 21, 2009
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Patent Application Number
10236383
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Patent Inventor Names
Michael S. Wilmo
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Gregory J. Engel
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Patent Jurisdiction
Patent Number
Patent Primary Examiner
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