Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9885445 | Locking-unlocking structure for guiding forward lifting of lifting body by repeating pushing action | WhiDong Joung, Pilkang Hwang | 2018-02-06 |
| 9863575 | Locking-unlocking structure for stopping lifting body, which is lifted and fallen through repetition of pushing actions, in lifting state and for releasing stopping state of lifting body | WhiDong Joung, Pilkang Hwang | 2018-01-09 |