Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5960760 | Light weight hollow valve assembly | Yushu Wang, Les Ecklund, James Larsen | 1999-10-05 |
| 5934238 | Engine valve assembly | Yushu Wang | 1999-08-10 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5960760 | Light weight hollow valve assembly | Yushu Wang, Les Ecklund, James Larsen | 1999-10-05 |
| 5934238 | Engine valve assembly | Yushu Wang | 1999-08-10 |