Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10436335 | Valves with multi-directional ball check | Melvin O. Castillo, James C. Hertenberger | 2019-10-08 |
| 8584705 | Bidirectional sleeved/plug ball check valve | Melvin O. Castillo, James C. Hertenberger | 2013-11-19 |
| 4627076 | Low power digital bus | Philip R. Staal, John H. Olsen | 1986-12-02 |