Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292131 | Gate valve and valve actuator | Frank E. Alter | 2025-05-06 |
| D924378 | Non-return device valve member | Douglas Wayne Mirth | 2021-07-06 |
| D917027 | Non-return device valve support member | Douglas Wayne Mirth | 2021-04-20 |
| 6364286 | Manually actuated valve | Ray Cole | 2002-04-02 |