Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045219 | Use of polyalphalolefin in downhole drilling | David O. Trahan | 1991-09-03 |
| 4876017 | Use of polyalphalolefin in downhole drilling | David O. Trahan | 1989-10-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045219 | Use of polyalphalolefin in downhole drilling | David O. Trahan | 1991-09-03 |
| 4876017 | Use of polyalphalolefin in downhole drilling | David O. Trahan | 1989-10-24 |