Mobile cart having a retractable-wheel base system | Patent Number 08016300
US 08016300 B2Filled DateOct 1, 2008
Priority DateOct 1, 2007
Publication DateApr 16, 2009
Expiration DateSep 13, 2019
Inventor/ApplicantsSteven Coffman
Paul Cramer
Paul Cramer
ExaminesKEENAN, JAMES W
Art Unit3652
Technology Center3600
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