Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11162316 | Reverse-circulation drilling assemblies and methods of using same | Christopher L. Drenth | 2021-11-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11162316 | Reverse-circulation drilling assemblies and methods of using same | Christopher L. Drenth | 2021-11-02 |