Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550684 | Data recording system having improved bookkeeping capability | Lionel C. Shih | 1996-08-27 |
| 5442493 | Data recording system having improved bookkeeping capability | Lionel C. Shih | 1995-08-15 |