Inventor · disambiguated record
Mark Zellefrow
Also filed as: ZELLEFROW MARK · ZELLEFROW MARK A
2 granted patents·3 pending applications·14 citations·filing 2001–2008
54Inventor score
Files withOHIO STEEL IND INC4
Top patents by PatentIndex Score
5 records- 0160USD473691SShopping cartOHIO STEEL IND INC·Filed 2001·Granted Apr 22, 2003·13 cites·1 claims
- 0248US2009121203A1Lawn and garden equipment liftOHIO STEEL IND INC·Filed 2008·Application pending·0 cites
- 0347US7610646B2Lawn sweeperOHIO STEEL IND INC·Filed 2006·Granted Nov 3, 2009·1 cites·3 claims
- 0444US2007164526A1Lawn and garden cartOHIO STEEL IND INC·Filed 2007·Application pending·0 cites
- 0536US2003145799A1Animal enclosure systemFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →