Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9777536 | Collapsible knock-out plug for hollow stem augers and methods of use for well-drilling | — | 2017-10-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9777536 | Collapsible knock-out plug for hollow stem augers and methods of use for well-drilling | — | 2017-10-03 |