Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6786304 | Guide for elevator | Kenji Utsunomiya, Takashi Yumura | 2004-09-07 |
| 6763917 | Elevator vibration reduction apparatus including a dead band filter | Kenji Utsunomiya, Takashi Yumura | 2004-07-20 |