Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6014211 | Device and method for providing a laser level plane | Michael Middleton | 2000-01-11 |
| 5235511 | Method for automatic depth control for earth moving and grading | Colin L. Robson | 1993-08-10 |
| 5184293 | Apparatus for automatic depth control for earth moving and grading | Colin L. Robson | 1993-02-02 |
| 4918608 | Method for automatic depth control for earth moving and grading | Colin L. Robson | 1990-04-17 |
| 4914593 | Method for automatic depth control for earth moving and grading | Colin L. Robson | 1990-04-03 |