Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5720248 | Torsional tunable coupling for a diesel engine drive shaft | — | 1998-02-24 |
| 5303681 | Torsional tunable coupling for a diesel engine drive shaft | — | 1994-04-19 |
| 4776390 | Venting filler cap | — | 1988-10-11 |
| 4620509 | Twin-flow cooling system | — | 1986-11-04 |
| 4550692 | Cooling system | — | 1985-11-05 |