Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5722460 | Digital servo valve system | Eric Hamman, Gary D'Angelo | 1998-03-03 |
| 5036886 | Digital servo valve system | Albert J. Sperbeck, Eric Hamman, Gary D'Angelo | 1991-08-06 |
| 4951549 | Digital servo valve system | Albert J. Sperbeck, Eric Hamman, Gary D'Angelo | 1990-08-28 |
| 4726583 | Passive hydraulic resistance system | Benny Olsen | 1988-02-23 |
| 4235156 | Digital servovalve and method of operation | — | 1980-11-25 |