Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4299583 | Hydraulic belt tensioner construction | Derald H. Kraft | 1981-11-10 |
| 4270906 | Belt tensioner construction | Derald H. Kraft | 1981-06-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4299583 | Hydraulic belt tensioner construction | Derald H. Kraft | 1981-11-10 |
| 4270906 | Belt tensioner construction | Derald H. Kraft | 1981-06-02 |