Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9732543 | Door interlock device for transformer room of vacuum circuit breaker | Kil Young Ahn, Seung Pil Yang | 2017-08-15 |
| 9620938 | Switchboard applied with bushing-type current transformer | Seung Pil Yang, Kil Young Ahn, Dae Soo Han, Seung Hwan Mun | 2017-04-11 |
| 9595817 | Transformer position adjustment preventing device of switchboard | Seung Pil Yang | 2017-03-14 |