Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856638 | Clutch damper with friction lag | Dennis C. Dull | 1989-08-15 |
WR
William H. Roth
Overall (1989): #43,297 of 140,708Top 35%
1
Patents 1989