Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12129735 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Dan Mueller | 2024-10-29 |
| 11441384 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Dan Mueller | 2022-09-13 |
| 10760374 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Dan Mueller | 2020-09-01 |