Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870507 | Video tape recorder system | Jong-Ahn Kim, Jong-Kwan Paik, Hee-Chul Gong | 1989-09-26 |
JA
Jung-ku Ahn
Overall (1989): #91,968 of 140,708Top 70%
1
Patents 1989