Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419033 | Apparatus and method for simultaneous drilling and casing wellbores | Detlef Hahn | 2002-07-16 |
| 6390201 | Method of creating a downhole sealing and hanging device | Robert Coon, Timothy John Frank | 2002-05-21 |