Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848468 | Enhanced hydraulic fracturing of a shallow subsurface formation | Randy D. Hazlett | 1989-07-18 |
| 4834181 | Creation of multi-azimuth permeable hydraulic fractures | Alfred R. Jennings, Jr. | 1989-05-30 |
| 4830106 | Simultaneous hydraulic fracturing | — | 1989-05-16 |