Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10836637 | Contactor apparatus and method of use | Thomas C. Willingham | 2020-11-17 |
| 10675561 | Sulfur seal device | David R. Hornbaker, Thomas C. Willingham, George A. Hearn | 2020-06-09 |