Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4890845 | Game apparatus with rotating elements | — | 1990-01-02 | |
| 4485908 | Vibration damper with variable rate springs and damping friction | — | 1984-12-04 | $7,546,000 |
| 4485909 | Multiple stage vibration damper | — | 1984-12-04 | $7,546,000 |
| 4465172 | Clutch disc with a variable torsional damper | — | 1984-08-14 | $8,186,000 |
| 4401201 | Clutch driven plate assembly | — | 1983-08-30 | $13,922,000 |
| 4185728 | Clutch disc with variable deflection rate vibration damper | — | 1980-01-29 | $1,289,000 |