Inventor · disambiguated record
John Hartzell
Also filed as: HARTZELL JOHN · HARTZELL JOHN C · HARTZELL JR JOHN C
4 granted patents·2 pending applications·69 citations·filing 1983–2016
77Inventor score
Files withHANGER HOLE PUNCHES INC1HARTZELL JOHN1HARTZELL JOHN C1J C J METAL PROC INC1PARKER HANNIFIN CORP1
Top patents by PatentIndex Score
6 records- 0169US6224463B1Workpiece finishing system and method of operating sameJ C J METAL PROC INC·Filed 1998·Granted May 1, 2001·32 cites·20 claims
- 0264US4607553ASelf-clearing punch with removable bladeHANGER HOLE PUNCHES INC·Filed 1984·Granted Aug 26, 1986·23 cites·8 claims
- 0347US4494426APunch with removable bladeHARTZELL JOHN C·Filed 1983·Granted Jan 22, 1985·13 cites·2 claims
- 0447US2016231148A1Floating optical sensor mountPARKER HANNIFIN CORP·Filed 2016·Application pending·0 cites
- 0546US9422950B2Floating optical sensor mountHARTZELL JOHN·Filed 2012·Granted Aug 23, 2016·1 cites·12 claims
- 0632US2003106572A1System and method for ozonated water cleaningFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →