Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352063 | Polymer concrete paving machine | Ralph C. Luebke, Hugh L. Adams | 1994-10-04 |
| 5328295 | Torsional automatic grade control system for concrete finishing | — | 1994-07-12 |
| D344736 | Riding trowel for concrete finishing | Hugh L. Adams | 1994-03-01 |
| 5288166 | Laser operated automatic grade control system for concrete finishing | Ralph C. Luebke, Thomas J. Leyes | 1994-02-22 |