Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5309771 | Method for processing signals in vortex flowmeters | Hyok S. Lew | 1994-05-10 |
| 5275059 | Magnetic induction flowmeter | Hyok S. Lew | 1994-01-04 |
| 5248246 | Orbiting ball meter-motor-pump | Hyok S. Lew | 1993-09-28 |
| 4802651 | Ball plug valve | Hyok S. Lew | 1989-02-07 |
| 4759260 | Super reliable air-spring return air cylinder | — | 1988-07-26 |
| 4702457 | Ball plug valve | Hyok S. Lew | 1987-10-27 |
| 4582342 | Pediroller board | Hyon S. Lew, Yon K. Lew | 1986-04-15 |
| 4544300 | Slide connectors with locking means | Hyok S. Lew | 1985-10-01 |
| 4512372 | Floating disc divert valve | Hyok S. Lew | 1985-04-23 |
| 4498371 | Direct acting rotary actuator cylinder | Hyok S. Lew | 1985-02-12 |
| 4431184 | Aerial gymnastic exerciser | Hyok S. Lew | 1984-02-14 |
| 4226167 | Air-spring return air cylinder | — | 1980-10-07 |