Oh; Heaung-Shig
Patent Applications and Registrations
Patent applications and USPTO patent grants for Oh; Heaung-Shig.The latest application filed is for "integrated apparatus for vacuum producing".
- Oh; Heaung-Shig - Gyeonggi-do KR
| Patent | Date |
|---|---|
| Integrated Apparatus For Vacuum Producing App 20100326599 - Hwang; Tae-Kyong ; et al. | 2010-12-30 |
| Composite dry vacuum pump having roots and screw rotor Grant 7,611,340 - Hwang , et al. November 3, 2 | 2009-11-03 |
| Composite dry vacuum pump having roots and screw rotor App 20080025858 - Hwang; Tae-Kyong ; et al. | 2008-01-31 |
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