Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |