DW

Donald Richard Wittkowski

AG Agri-Fab: 4 patents #4 of 23Top 20%
📍 Racine, WI: #235 of 1,018 inventorsTop 25%
🗺 Wisconsin: #9,054 of 40,088 inventorsTop 25%
Overall (All Time): #1,031,768 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D535802 Poly cart 2007-01-23
D522409 Tandem axle trailer 2006-06-06
D513717 Tandem axle trailer 2006-01-24
D512942 Three-point hitch trailer 2005-12-20
5408813 Dethatching apparatus with independently rotating sets of tines Joseph Haban, Alan Delfs 1995-04-25