Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7562702 | Drain cap stuffing box | Michael Dominik | 2009-07-21 |
| 7516796 | Piston pump assembly with flexible riser pipe | — | 2009-04-14 |
| 5429193 | Piston pump and applications therefor | Donald C. Hegebarth | 1995-07-04 |
| 4990028 | Anti-friction composition containing MgO and method | William Alexander | 1991-02-05 |
| 4944634 | Anti-friction composition containing MgO and method | William Alexander | 1990-07-31 |