Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5119921 | Baffle wall for a cover of a viscous fluid clutch and method | David Drennen, David Hudson | 1992-06-09 |
| 5113987 | Fluid return channels for a cover of a viscous fluid clutch | David Drennen, David Hudson | 1992-05-19 |
| 4995494 | Pressure-responsive fluid check valve and method for viscous fluid clutch | Lawrence C. Kennedy | 1991-02-26 |