Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10451054 | Pump assembly | Richard Marcis | 2019-10-22 |
| 10161396 | Zero emission reciprocating drive pump | Richard Marcis | 2018-12-25 |
| 9670921 | Reciprocating drive mechanism with a spool vent | Richard Marcis | 2017-06-06 |
| 6736046 | Pilot control valve utilizing multiple offset slide valves | Andrew C. Elliott | 2004-05-18 |
| 6183217 | Pilot control valve for controlling a reciprocating pump | Andrew C. Elliott | 2001-02-06 |
| 5468127 | Pilot control valve having means for recovering exhaust fluids | Andrew C. Elliott | 1995-11-21 |
| 5299598 | Check valve | Anthony J. Quartana, III | 1994-04-05 |