Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5018598 | Apparatus for generating seismic waves | — | 1991-05-28 |
| 4527625 | Packer valve arrangement | Edward T. Wood | 1985-07-09 |
| 4252210 | Methods of and apparatus for generating seismic waves | — | 1981-02-24 |