Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11261938 | Zipper chain | — | 2022-03-01 |
| 10458735 | Combined loading device and combined loading method for shell and charge | Jae Yi Oh | 2019-10-29 |
| 6481675 | Outer tube support plate structure of a gas cylinder | — | 2002-11-19 |
| 6371421 | Device for controlling the height of a swivel chair | Dong Ma | 2002-04-16 |
| 6367657 | Control valve for a gas cylinder | — | 2002-04-09 |
| 6241316 | Apparatus for adjusting the height of a swivel chair | Young San Jean, Baik H Sung, Ju Dae Kim, Jong Gyu Lee | 2001-06-05 |
| 6079690 | Screw spindle assembly of swivel chair | — | 2000-06-27 |