DK

Douglas Dean Korthals

JD John Deere: 8 patents #574 of 5,518Top 15%
📍 Fuquay-Varina, NC: #62 of 309 inventorsTop 25%
🗺 North Carolina: #6,564 of 45,564 inventorsTop 15%
Overall (All Time): #643,729 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
9750179 Convertible mower deck with mulch on demand actuator Steven L. Dudzinski 2017-09-05
7458311 Return to neutral for dual hydrostatic transmission 2008-12-02
7430861 Shift controlled bypass orifice for hydrostatic transmission 2008-10-07
7401456 Horizontally retractable mower deck 2008-07-22
6935106 Neutral start mechanism for a hydrostatic transmission 2005-08-30
6868657 Mowing machines with ergonomic hand control levers Brian Bauer, Ellis R. West 2005-03-22
6848532 Transmission control systems 2005-02-01
6782964 Mower Randall Joseph Bischel, Ellis R. West 2004-08-31