Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5775616 | Tape tension control apparatus for video cassette tape recorder | Mun Chae Joung | 1998-07-07 |
| 5452169 | Variable bulge device for rotatable head drum | Joong Kwon Joh, Soo-Kil Kim, Mun Chae Joung, Ho Won Lee, Yoon S. Seoh +3 more | 1995-09-19 |