Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850747 | Trench box | — | 1989-07-25 |
| 4791737 | Excavator | — | 1988-12-20 |
| 4764191 | Air filter | — | 1988-08-16 |
| 4725187 | Excavator | — | 1988-02-16 |
| 4705626 | Magnetic oil filter module | — | 1987-11-10 |
| 4677772 | Excavator with extensible boom | — | 1987-07-07 |
| 4663034 | Hydraulic filter system for excavation equipment | — | 1987-05-05 |
| 4659260 | Trench box | — | 1987-04-21 |