Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882224 | Magnetic particles, method for making and electromagnetic clutch using same | Yoshikazu Narumiya | 1989-11-21 |
HM
Hideharu Moro
Overall (1989): #104,698 of 140,708Top 75%
1
Patents 1989