Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12191829 | Differential amplifier and a data driving device | Ho Jong Park, Tae Jun Ahn, Sung Dae YEO | 2025-01-07 |
| 5499151 | Mode changing method utilizing one cam gear and one solenoid for a cassette tape recorder | Hae-Seok LEE | 1996-03-12 |
| 5392182 | Mode changing apparatus utilizing one cam gear and one solenoid for a cassette tape recorder | Hae-Seok LEE | 1995-02-21 |