Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5316709 | Method of making a dipper stick for an excavator from high strength polymeric composite materials | Jae I. Ko, Jae Won Lee, En J. Jean, Chun-Ki Kim, Jin Tae Kim | 1994-05-31 |
| 5245770 | Dipper stick for excavator of high strength polymeric composite materials and method for manufacturing such | Jae I. Ko, Jae Won Lee, En J. Jean, Chun-Ki Kim, Jin Kook Kim | 1993-09-21 |