Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362628 | Method and apparatus for cleaning basins | Bertram M. Leecraft | 1982-12-07 |
| 4353719 | Drilling fluid gas and solids removal system | — | 1982-10-12 |
| 4350596 | Method and apparatus for recovering waste oil | — | 1982-09-21 |
| 4315335 | Dual safe helmet | Steven W. Wright | 1982-02-16 |