Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767349 | Wet electrical connector | James J. Walulik, Ralph L. Simmons | 1988-08-30 |
| 4597440 | Method and apparatus for displacing logging tools in deviated wells | — | 1986-07-01 |
| 4589717 | Repeatedly operable electrical wet connector | James J. Walulik, Ralph L. Simmons | 1986-05-20 |
| 4496008 | Well perforating apparatus | Pierre Chesnel | 1985-01-29 |
| 4393946 | Well perforating apparatus | Pierre Chesnel, Bernard Chaintreau | 1983-07-19 |