Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933693 | Method and apparatus of detecting disturbances in a centrifugal pump | — | 2005-08-23 |
| 6709240 | Method and apparatus of detecting low flow/cavitation in a centrifugal pump | Steven Christopher Schmalz | 2004-03-23 |
| 6202016 | Shift on the go transmission system | Dwight B. Stephenson | 2001-03-13 |
| 6044632 | Backup proximity sensor for a vehicle | Steven Christopher Schmalz, Joseph C. Zuercher | 2000-04-04 |
| 6021373 | Back-up proximity sensor for a vehicle | Joseph C. Zuercher, Steven Christopher Schmalz | 2000-02-01 |
| 5960694 | Hydrostatic power steering system having reduced wheel slip | David Thomas, David E. Ewel, Timothy A. Hjelsand, Jerry F. Carlin | 1999-10-05 |
| 5021645 | Photoelectric color sensor for article sorting | Keith O. Satula, Eugene F. Duncan | 1991-06-04 |
| 4845627 | Remote programmable controller | Gregory L. Nadolski | 1989-07-04 |
| 4543527 | Proximity switch exhibiting improved start-up characteristics | Donald L. Van Zeeland | 1985-09-24 |
| RE30678 | Dormant oscillator ground to neutral protection for ground fault interrupters | Donald L. Van Zeeland | 1981-07-14 |
| 4199798 | Phase balance monitoring system incorporating voltage and phase sequence monitoring | Elton D. Leppke | 1980-04-22 |