RW

Richard A. Wittren

JD John Deere: 7 patents #667 of 5,518Top 15%
📍 Cedar Falls, IA: #54 of 441 inventorsTop 15%
🗺 Iowa: #2,245 of 15,303 inventorsTop 15%
Overall (All Time): #769,334 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4640094 Flow amplifying steering system 1987-02-03
4556078 Priority valve 1985-12-03
4541451 Priority valve James A. Miller 1985-09-17
4463775 Compensating valve 1984-08-07
4405030 Steering system and compensating valve 1983-09-20
4367803 Steering system 1983-01-11
4209984 Hydraulic system with unloading valve assembly Carl E. Kittle 1980-07-01