Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419606 | Aircraft control surface drive apparatus | Alfred K. Tengan | 2002-07-16 |
| 6298661 | Energy efficient hydraulic motor control system | Robert Edward Holder, Alfred K. Tengan | 2001-10-09 |