Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647434 | Floating apparatus for well casing | Henry E. Rogers, Dick A. Murray | 1997-07-15 |
| 5641021 | Well casing fill apparatus and method | Dick A. Murray, Henry E. Rogers, Earl Webb | 1997-06-24 |