Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975106 | Rotary actuator valve closure apparatus | Douglas A. Morgan | 1999-11-02 |
| 5694960 | Hazardous gas protection system and method for automatic valve closure | Douglas A. Morgan | 1997-12-09 |