Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10443381 | Adjustable mine ventilation system and method | Nathanael Rogers, Timothy Dale Beeman | 2019-10-15 |
| 9759065 | Mine ventilation system and method | Timothy Dale Beeman, David William Lantz, III | 2017-09-12 |
| 9200423 | Cleaning vehicle, vehicle system and method | Michael R. Meyers, Reuben Jay Ruggiero | 2015-12-01 |