Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401843 | Drilling head with a cone rock bit | Patrick Fayaud, Bernard Tissier, Pierre Lecour | 2002-06-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401843 | Drilling head with a cone rock bit | Patrick Fayaud, Bernard Tissier, Pierre Lecour | 2002-06-11 |