Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7642668 | Power transmission apparatus for wind generator | Doo Hoon Kim, Ji-yoon Ryu, Jin-I Park, Chul-jin Byun, Jin-su Hwang +1 more | 2010-01-05 |
| 4813851 | Process and appliance for conveying liquid or gaseous fluids | Georg Koppenwallner | 1989-03-21 |