Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6775080 | Data access device implemented with open and closed control loops to access data stored in discrete stepwise segments | Jeffrey Liu | 2004-08-10 |
| 6728059 | Magnetic data card servo writer | Jeffrey Liu | 2004-04-27 |