Inventor · disambiguated record
Donald Richard Wittkowski
Also filed as: WITTKOWSKI DONALD R · WITTKOWSKI DONALD RICHARD
5 granted patents·2 pending applications·60 citations·filing 1994–2007
81Inventor score
Top patents by PatentIndex Score
7 records- 0174USD522409STandem axle trailerAGRI FAB INC·Filed 2005·Granted Jun 6, 2006·20 cites·1 claims
- 0253USD513717STandem axle trailerAGRI FAB INC·Filed 2004·Granted Jan 24, 2006·8 cites·1 claims
- 0352US2008271281A1Loose Material Collecting Device and MethodAGRI FAB INC·Filed 2007·Application pending·0 cites
- 0451USD535802SPoly cartAGRI FAB INC·Filed 2004·Granted Jan 23, 2007·8 cites·1 claims
- 0547US5408813ADethatching apparatus with independently rotating sets of tinesHABAN MANUFACTURING COMPANY·Filed 1994·Granted Apr 25, 1995·19 cites·17 claims
- 0642USD512942SThree-point hitch trailerAGRI FAB INC·Filed 2004·Granted Dec 20, 2005·5 cites·1 claims
- 0736US2006283611A1Front-mounted scoop for a vehicleWITTKOWSKI DONALD R·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →