Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748688 | Electromagnetic wave receiver | — | 1988-05-31 |
| 4737771 | Security system with interference detection | — | 1988-04-12 |
| 4684853 | Garage door opener using transmitter with SAW oscillator modulator | — | 1987-08-04 |
| 4569481 | Corner watering system for center pivot irrigation machines | John E. Davis, Terry L. Zielke | 1986-02-11 |
| 4549694 | Corner watering system for center pivot irrigation machines | John E. Davis, Terry L. Zielke | 1985-10-29 |
| 4508269 | Corner watering system for center pivot irrigation machines | John E. Davis, Terry L. Zielke | 1985-04-02 |
| 4463906 | Guidance system for lateral move irrigation machines | Richard F. Reinke | 1984-08-07 |