Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9494065 | Apparatus for processing exhaust fluid | Sang-Yun Lee, Heaungshig Oh | 2016-11-15 |
| 7611340 | Composite dry vacuum pump having roots and screw rotor | Tae-Kyong Hwang, Heaung Shig Oh | 2009-11-03 |