Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5875561 | Digital compass | Yang Ning Pi | 1999-03-02 |
| 5498353 | Semi-synthetic two-stroke engine oil formulation | Ron Lin, Chen-Yi Lin, Tsae-Shycm Lee, Su-Terng Chang, Kuo-Min Wei | 1996-03-12 |
| 5395069 | Two-stage brake device of a tape measure | — | 1995-03-07 |
| D320036 | Cash register | — | 1991-09-17 |