Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4624650 | Torsional vibration absorber device | Hiroshi Nakayama, Michio Suzuki | 1986-11-25 |
| 4284178 | Hydraulic shock absorber | Takao Tomita | 1981-08-18 |
MH
Masao Hiruma
Overall (All Time): #2,350,529 of 4,157,543Top 60%
2
Patents All Time