Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10850955 | Controller for hoist capable of multi-stage speed control and hoist including the same controller | Sung Woo Woo | 2020-12-01 |
| 10781088 | Controller for hoist capable of multi-speed control and hoist including the same controller | Si Kyung Kim | 2020-09-22 |
| 8496514 | Intelligent energy saving ventilation control system | Jo-chun Kim, Sang Gwi Chung, Youn Suk Son | 2013-07-30 |