Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452155 | Obstruction detection system and method having an alternating signal representative of a velocity of an object | Robert W. Preston | 2002-09-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452155 | Obstruction detection system and method having an alternating signal representative of a velocity of an object | Robert W. Preston | 2002-09-17 |