Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5094596 | High pressure piston pump for fluent materials | James E. Cavanaugh, Robert D. Hetherington | 1992-03-10 |
| 4690308 | Pail mount pump with integral cover | James E. Cavanaugh, Robert D. Hetherington | 1987-09-01 |