Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10625138 | Screen baseball system, hole opening and closing apparatus and ball pitching apparatus utilized thereby, and method for controlling pitching of screen baseball system | Sang-Hyun Joo, Se Hwan Kim, Bong Kyung Ko, Yeong Jin Noh | 2020-04-21 |