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| No. | Title | Registration No. | Inventor | Issue Date |
|---|---|---|---|---|
| 58 | 10-2124155 | Y. J. Kim et al. | 2020-06-11 | |
| 57 | 10-2120174 | Y. J. Kim et al. | 2020-06-02 | |
| 56 | 10-2099088 | S. Y. Baek et al. | 2020-04-03 | |
| 55 | 10-2096849 | N. G. Lee et al. | 2020-03-30 | |
| 54 | 10-2095855 | S. P. Moon et al. | 2020-03-26 | |
| 53 | 10-2095709 | T. J. Kim et al. | 2020-03-26 | |
| 52 | 10-2094868 | S. M. Baek et al. | 2020-03-24 | |
| 51 | 10-2092160 | W. S. Kim et al. | 2020-03-17 | |
| 50 | 10-2059357 | S. P. Moon et al. | 2019-12-19 | |
| 49 | 10-2051967 | S. Y. Baek et al. | 2019-11-28 |