Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870507 | Video tape recorder system | Jung-ku Ahn, Jong-Ahn Kim, Jong-Kwan Paik | 1989-09-26 |
HG
Hee-Chul Gong
Overall (1989): #106,935 of 140,708Top 80%
1
Patents 1989