Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4338962 | Control and relief valves | John D. Petro | 1982-07-13 |
| 4337018 | Rotary impeller pump or motor with counterbalancing chamber in thrust plate bearing counterbore | Carl M. Singer, Mateiu J. Oana | 1982-06-29 |