Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10766742 | Hydraulic elevator safety device, and method for detecting open-door travel abnormality in hydraulic elevator | — | 2020-09-08 |
HI
Hirofumi Ikai
Overall (All Time): #2,813,339 of 4,157,543Top 70%
1
Patents All Time