Issued Patents 2017
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9822587 | Method and apparatus for controlling downhole rotational rate of a drilling tool | Nicholas Ryan Marchand, Ralph William Graeme Johns | 2017-11-21 |
| 9771757 | Downhole motor with concentric rotary drive system | Nicholas Ryan Marchand, Jeffery Ronald Clausen | 2017-09-26 |
| 9587437 | Powered reaming device | Alan Martyn Eddison | 2017-03-07 |
| 9574401 | Downhole motor with concentric rotary drive system | Nicholas Ryan Marchand, Jeffery Ronald Clausen | 2017-02-21 |
| 9567850 | System of monitoring rotational time of rotatable equipment | Michael Xuefei Tang | 2017-02-14 |