Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7952828 | Hard disk drive, method for parking magnetic head of hard disk drive, and computer readable recording medium recording the method | Hyung-joon Cho | 2011-05-31 |
| 5930069 | Intelligent hard disk drive with track pitch adjustment | — | 1999-07-27 |
| 4816809 | Speaking fire alarm system | — | 1989-03-28 |