Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867290 | High excursion torsional vibration damper for controlled energy absorption | Malcolm E. Kirkwood | 1989-09-19 |
FM
Fraser J. Macdonald
Overall (1989): #114,473 of 140,708Top 85%
1
Patents 1989