Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D410697 | Sign support structure | — | 1999-06-08 |
| 4920859 | Radial piston pump and motor | William M. Puls, David L. Hansen | 1990-05-01 |
| 4804317 | Rotary vane pump with floating rotor side plates | Charles D. McComas | 1989-02-14 |