Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446718 | Down hole tool and method | Michael Paul Barrett, Michael Charles Sheppard | 2002-09-10 |
| 6405798 | Downhole tool and method | Michael Paul Barrett, Michael Charles Sheppard | 2002-06-18 |