Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884594 | Compact twin piston pump | Joseph G. Currier, Joseph S. Zeets | 1989-12-05 |
| 4869653 | Compact twin piston pump | Joseph G. Currier, Joseph S. Zeets | 1989-09-26 |
| 4869655 | Compact twin piston pump | Joseph G. Currier, Joseph S. Zeets | 1989-09-26 |
| 4830230 | Hydraulically controlled portioner apparatus | — | 1989-05-16 |