Issued Patents All Time
Showing 76–80 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020600 | Method and apparatus for chemical treatment of subterranean well bores | — | 1991-06-04 |
| 4951747 | Inflatable tool | — | 1990-08-28 |
| 4934460 | Pressure compensating apparatus and method for chemical treatment of subterranean well bores | — | 1990-06-19 |
| 4832120 | Inflatable tool for a subterranean well | — | 1989-05-23 |
| 4745972 | Well packer having extrusion preventing rings | Merle L. Bell | 1988-05-24 |