Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33928 | Fire-safe valve actuator | Billy R. Bruton, Marion W. Perkins | 1992-05-19 |
| 4354425 | Fire-safe valve actuator | Billy R. Bruton, Marion W. Perkins | 1982-10-19 |
| 4354663 | Valve construction for sand and slurry service | Ralph William Vanderburg | 1982-10-19 |