Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835473 | Method using a d.c. source for determining resistivity distribution of the earth as a function of depth | — | 1989-05-30 |
| 4757262 | Method for geophysical exploration using electromagnetic array | — | 1988-07-12 |
| 4591791 | Electromagnetic array profiling survey method | — | 1986-05-27 |
| 4282486 | Dual focused resistivity logging method and apparatus with dynamic range reduction | Richard B. Culver | 1981-08-04 |