Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5755277 | Heat exchanger | Wouter Detlof Berggren | 1998-05-26 |
| 4356865 | Pump plug for use in well operations | Bartel Kuilman | 1982-11-02 |
CA
Cornelis Appel
Overall (All Time): #2,260,593 of 4,157,543Top 55%
2
Patents All Time