Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5088901 | Membrane pump with a freely oscillating metal membrane | — | 1992-02-18 |
| 4773831 | Diaphragm plunger pump | Dirk Petersen, Peter Wente | 1988-09-27 |
| 4465438 | Piston diaphragm pump | Dirk Petersen | 1984-08-14 |