Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8695627 | Stand for pressure relief valve | Mark D. Matzner | 2014-04-15 |
| 8376723 | Connecting rod without wrist pin | Mark D. Matzner | 2013-02-19 |
| 7404704 | Manifold assembly for reciprocating pump | Mark D. Matzner | 2008-07-29 |
| 7364412 | System, method, and apparatus for valve stop assembly in a reciprocating pump | Mark D. Matzner | 2008-04-29 |
| 7219594 | Coolant system for piston and liner of reciprocating pumps | Mark D. Matzner | 2007-05-22 |
| 6978799 | Emergency pressure relief valve with enhanced reset | Mark D. Matzner | 2005-12-27 |
| 6209561 | Emergency pressure relief valve | Mark D. Matzner | 2001-04-03 |
| 5823093 | Liner assembly with a fluid end cylinder | Mark D. Matzner | 1998-10-20 |