Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7156190 | Impact tool | Craig A. Berard | 2007-01-02 |
| 6155353 | Impact tool | — | 2000-12-05 |
| 5685563 | Counterbalance system for short wheelbase vehicles | — | 1997-11-11 |
| 5269382 | Impact device | — | 1993-12-14 |
| 5183316 | Mounting bracket for a working device | — | 1993-02-02 |
| 5065824 | Hydraulically powered repetitive impact hammer | — | 1991-11-19 |
| 4892358 | Bucket system with percussive penetration member | — | 1990-01-09 |
| 4892359 | Bucket system with percussive penetration member | — | 1990-01-09 |
| 4783123 | Tool bit for impact ripping of a mine face | — | 1988-11-08 |
| 4550784 | Tool mounting means for a hydraulically powered impact hammer | Bernard W. Duehr, Jr. | 1985-11-05 |
| 4262917 | Tool holder for impact tool | — | 1981-04-21 |
| 4222462 | Brake to decelerate axially moving actuating rod | — | 1980-09-16 |