Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6000504 | Group management control method for elevator | Jeong-Oh Kim, Pai Hun Hahn | 1999-12-14 |
| 5884729 | Apparatus and method for controlling a plurality of elevator cars | Jong-hun Park, Sung-joon Park | 1999-03-23 |