Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8356674 | Tubular running tool and methods of use | Richard Lee Murray, Jr., Pieter Dekker, Keith Mitchell Wien, Neils De Keijzer, Antonius Dimphena Maria Krijnen +3 more | 2013-01-22 |
| 7762343 | Apparatus and method for handling pipe | Leendert Adriaan Marinus Sonneveld, Antonius Dimphena Maria Krijnen, Albert Patrick Jozef Maria de Pont, Michael Antoon Herman Schats, Cornelis Wilhelmus Jacobus de Laat | 2010-07-27 |
| 6915857 | Non-seize material attachment for a drill slip system | Ronaldus Roling, David Mason | 2005-07-12 |
| 5340182 | Safety elevator | Cornelis L. Busink, David Mason | 1994-08-23 |