Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10753152 | Rotor catch for bottomhole assembly | Sheldon Ritchie | 2020-08-25 |
| 10633919 | Compound angle bearing assembly | Sheldon Ritchie | 2020-04-28 |
| 10612316 | Articulated universal joint with backlash reduction | Sheldon Ritchie | 2020-04-07 |
| 10550689 | Method and apparatus for generating a low frequency pulse in a wellbore | Sheldon Ritchie, Malcolm Grant | 2020-02-04 |