Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884594 | Compact twin piston pump | Richard G. Powers, Joseph G. Currier | 1989-12-05 |
| 4869653 | Compact twin piston pump | Richard G. Powers, Joseph G. Currier | 1989-09-26 |
| 4869655 | Compact twin piston pump | Richard G. Powers, Joseph G. Currier | 1989-09-26 |