Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11156217 | Hydraulic and control system for resin injection | Michael Weaver, Mark Crable | 2021-10-26 |
| 10954787 | Pumpable two component resin | John C. Stankus, Richard Wharton, Lumin Ma | 2021-03-23 |
| 10941657 | Corrosion resistant yieldable bolt | Lumin Ma, John C. Stankus | 2021-03-09 |