Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419606 | Aircraft control surface drive apparatus | Da-Yu Hsu | 2002-07-16 |
| 6298661 | Energy efficient hydraulic motor control system | Robert Edward Holder, Da-Yu Hsu | 2001-10-09 |
| 5937990 | Transmission with load brake | Anthony J. DiGiacomo, Shijie Liu, Khoi Vu, Robert L. Kowalski | 1999-08-17 |
| 5235873 | Backlash eliminator | — | 1993-08-17 |
| 4244398 | Check valve assembly having valve opening prior to passing flow and flow shut off prior to valve closing | — | 1981-01-13 |