Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10584535 | Bi-directional well drilling | — | 2020-03-10 |
| 9995089 | Method and apparatus for efficient bi-rotational drilling | — | 2018-06-12 |
| 9562405 | Method and apparatus for continuous raising and lowering joints of pipe | — | 2017-02-07 |
| 8946618 | System for detecting one or more predetermined optically derivable characteristics of a sample | John Kalitsis, Ian John Wesley | 2015-02-03 |
| 8183548 | System for detecting one or more predetermined optically derivable characteristics of a sample | John Kalitsis, Ian John Wesley | 2012-05-22 |
| 4370814 | Well tool for detecting well bore deviation in drill string | — | 1983-02-01 |
| 4181215 | Gravity type carrier mechanism | — | 1980-01-01 |