Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090437 | Low friction proportional unloading valve | — | 1992-02-25 |
| 5051074 | Bi-directional reciprocating pump mechanism | — | 1991-09-24 |
| 5031509 | Anti-leak seal for pump motor | — | 1991-07-16 |
| 4870890 | Automatic reversing valve | — | 1989-10-03 |
| 4723892 | Constant power variable volume pump | — | 1988-02-09 |