Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10262812 | Lockout device and method for its use | David Johnson | 2019-04-16 |
| 9875858 | Lockout device and a method for its use | David Johnson | 2018-01-23 |
| 8890010 | Lockout device and a method for its use | David Johnson | 2014-11-18 |