Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6272406 | Guidance system for an automated guided-vehicle | Ronald R. Drenth | 2001-08-07 |
| 6092010 | Method and system for describing, generating and checking non-wire guidepaths for automatic guided vehicles | Ronald R. Drenth, Justin R. Drenth | 2000-07-18 |
| 5916285 | Method and apparatus for sensing forward, reverse and lateral motion of a driverless vehicle | Ronald R. Drenth | 1999-06-29 |
| 5825481 | Optic position sensor | Ronald R. Drenth | 1998-10-20 |
| 5467084 | Vehicle position determining apparatus | Ronald R. Drenth | 1995-11-14 |
| 5434781 | Method and apparatus for guiding a driverless vehicle using a sensor tracking a cable emitting an electromagnetic field | Ronald R. Drenth | 1995-07-18 |