Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9500041 | Drill string inground isolator in an MWD system and associated method | Albert W. Chau | 2016-11-22 |
| 9422802 | Advanced drill string inground isolator housing in an MWD system and associated method | Albert W. Chau | 2016-08-23 |
| 9279300 | Split ring shift control for hydraulic pulse valve | Jack J. Kolle | 2016-03-08 |