Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11613994 | Piston arrangement | — | 2023-03-28 |
| 11603881 | Piston arrangement | — | 2023-03-14 |
| 11543514 | Activity detection in sand environment | Roger P. Vonderahe, Patricia L. Vonderahe, Michael W. Schab | 2023-01-03 |