Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852699 | Disk brake assembly | Dean C. Karnopp | 1989-08-01 |
| 4844428 | Air spring assembly | Donald L. Margolis | 1989-07-04 |
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Yoshiyuki Yasui
Overall (1989): #12,214 of 140,708Top 9%
2
Patents 1989