Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321213 | Downhole epicyclic motion orbital seismic source | Jack H. Cole, Paul L. Buller, John B. Sinton | 1994-06-14 |
| 5285023 | Downhole hydraulic rotary seismic source | Jack H. Cole | 1994-02-08 |