Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5778672 | Brake valve | Peter Backes | 1998-07-14 |
| 5400595 | Brake valve with prefill chamber unloading | — | 1995-03-28 |
| 5394701 | Brake valve with prefill chamber unloading valve | Larry M. Delfs, Derek M. Eagles | 1995-03-07 |
| 5245827 | Supply valve arrangement for closed center hydraulic system | Larry M. Delfs, Derek M. Eagles, Ronald Pratt | 1993-09-21 |
| D326709 | Selective control valve used to operate implements attached to a tractor | Larry M. Delfs, Cristian J. Felix, William E. Crookes | 1992-06-02 |
| 4881573 | Female hydraulic coupler with push-connect and lever disconnect | Uwe H. Kugler, Bennie J. Vaughn, Douglas W. Nordquist, Larry M. Delfs | 1989-11-21 |