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Patent applications and USPTO patent grants for Zimmerman; Felton.The latest application filed is for "easy dumping cart".
Patent | Date |
---|---|
Self adjusting bicycle Grant 8,342,552 - Zimmerman January 1, 2 | 2013-01-01 |
Easy dumping cart Grant 7,775,531 - Zimmerman August 17, 2 | 2010-08-17 |
Wheelbarrow extension Grant D591,022 - Zimmerman April 21, 2 | 2009-04-21 |
Wheelbarrow extension Grant D591,023 - Zimmerman April 21, 2 | 2009-04-21 |
Wheelbarrow extension Grant D588,323 - Zimmerman March 10, 2 | 2009-03-10 |
Easy dumping cart App 20080067767 - Zimmerman; Felton | 2008-03-20 |
Easy dumping cart Grant 7,296,807 - Zimmerman November 20, 2 | 2007-11-20 |
Easy dumping cart App 20050146102 - Zimmerman, Felton | 2005-07-07 |
Easy dumping cart Grant 6,886,838 - Zimmerman May 3, 2 | 2005-05-03 |
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