Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5434785 | System for automatically controlling quantity of hydraulic fluid of an excavator | Lee Jin-han, Jeong Sang-tae | 1995-07-18 |
| 5251440 | Control apparatus and method for automatically controlling a hydraulic system for heavy construction equipment | Hoang Bong-dong, Jo Jang-ug, Jeong Sang-tae, Lee Chan-hee, Lee Jin-han | 1993-10-12 |