Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10309460 | Ball bearing | Yong Bok Lee, Bok Seong Choe, Sangmin HAN | 2019-06-04 |
| 10247638 | Bearing test apparatus for testing behavior of the bearing | Yong Bok Lee, Bok Seong Choe, Wonil Kwak, Ou Seok Seo | 2019-04-02 |