Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6742585 | Sealing off openings through the wall of a well tubular | Wilhelmus Hubertus Paulus Maria Heijnen, Pieter Karel Anton Kapteijn | 2004-06-01 |
| 6705085 | Downhole electric power generator | Wilhelmus Hubertus Paulus Maria Heijnen | 2004-03-16 |