| 5430651 |
Position control system for a construction implement such as a road grader |
Ross C. Stoepker, Fred D. Litty |
1995-07-04 |
| 5327345 |
Position control system for a construction implement such as a road grader |
Ross C. Stoepker, Fred D. Litty |
1994-07-05 |
| D348227 |
Laser beacon |
Willard G. Vogelaar, Philip O. Gerard |
1994-06-28 |
| 5287365 |
Compact laser apparatus |
Willard G. Vogelaar, Philip O. Gerard |
1994-02-15 |
| 5243398 |
Surveying instrument including low power light plane generator |
— |
1993-09-07 |
| 4945221 |
Apparatus and method for controlling a hydraulic excavator |
Timothy E. Steenwyk |
1990-07-31 |
| 4884939 |
Self-contained laser-activated depth sensor for excavator |
— |
1989-12-05 |
| 4866641 |
Apparatus and method for controlling a hydraulic excavator |
Timothy E. Steenwyk |
1989-09-12 |
| 4829418 |
Apparatus and method for controlling a hydraulic excavator |
Timothy E. Steenwyk |
1989-05-09 |
| 4805086 |
Apparatus and method for controlling a hydraulic excavator |
Timothy E. Steenwyk |
1989-02-14 |
| 4395831 |
Dryer vent |
— |
1983-08-02 |
| 4293218 |
Reference light beam projector |
Kenneth C. Mosley, Louis M. Chatterson |
1981-10-06 |