Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872144 | Endfire seismic receiver and method of use | Richard E. Duren | 1989-10-03 |
| 4870625 | Marine shear-wave detection system using single mode reflection boundary conversion technique | Richard C. Swenson | 1989-09-26 |
| 4835745 | Method of radial seismic data collection for improved salt structure imaging | Richard E. Duren | 1989-05-30 |