Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849988 | Apparatus and method for measuring the quality of steam | — | 1989-07-18 |
| 4836032 | Method of determining the quality of steam for stimulating hydrocarbon production | Clifford L. Redus, Peter L. Sigwardt | 1989-06-06 |