Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857828 | Process for automatically controlling power excavators | Dong-Jae Lee | 1999-01-12 |
| 5794369 | Device and process for controlling the automatic operations of power excavators | Dong-Jae Lee | 1998-08-18 |
| 5682855 | Method for controlling RPM of engine in hydraulic construction machine | Myung Hoon Song | 1997-11-04 |