Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830132 | Brake device for elevator | Shin-joon Kang, Chae-Min Hong, Jong-Myeon Kim, Jong-soon Kim | 2004-12-14 |
| 6769973 | Polishing head of chemical mechanical polishing apparatus and polishing method using the same | Jae-Phil Boo, Jun-Gyu Ryu, Sang-Seon Lee, Sun-Wung Lee | 2004-08-03 |