Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623044 | Riser element with integrated auxiliary pipes | Jean Guesnon | 2003-09-23 |
| 4960181 | Method and device for improving the coefficient of transmission to geological formations of energy created by a well seismic source | Eric Marin | 1990-10-02 |