Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10934801 | Lockout for hydraulic rotary valve in control system for oil well blow-out preventer | Joseph O. Beard, Douglas W. Beard | 2021-03-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10934801 | Lockout for hydraulic rotary valve in control system for oil well blow-out preventer | Joseph O. Beard, Douglas W. Beard | 2021-03-02 |