Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7774917 | Forge welding tubulars | Johannis Josephus Den Boer, Anthony Thomas Cole, Klisthenis Dimitriadis, Jan Erik Vollebregt, Djurre Hans Zijsling | 2010-08-17 |
| 7181821 | Joining expandable tubulars | Johannis Josephus Den Boer, Anthony Thomas Cole, Klisthenis Dimitriadis, Jan Erik Vollebregt, Djurre Hans Zijsling | 2007-02-27 |