Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7673691 | Apparatus for retaining two strings of tubulars | — | 2010-03-09 |
| 7124828 | Apparatus for retaining two strings of tubulars | — | 2006-10-24 |
| 7114235 | Automated pipe joining system and method | Holger Wilschinsky | 2006-10-03 |
| 6848520 | Bushing for a drilling rig | — | 2005-02-01 |
| 6443458 | Packer | — | 2002-09-03 |
| 6422311 | Apparatus for retaining two strings of tubulars | — | 2002-07-23 |
| 6386282 | Safety switching system for clamping devices for pipes | — | 2002-05-14 |
| 6026675 | Method and apparatus for testing threaded joints and threaded members | — | 2000-02-22 |
| 5451084 | Insert for use in slips | — | 1995-09-19 |
| 5261488 | Centralizers for oil well casings | Paul D. Gullet | 1993-11-16 |
| 5255559 | Apparatus for testing the gas-tightness of a joint between hollow members | — | 1993-10-26 |
| 5221099 | Device for conducting forces into movable objects | — | 1993-06-22 |
| 4876884 | Apparatus for testing the gas-tightness of joints between hollow bodies | — | 1989-10-31 |
| 4838073 | Method and apparatus for detecting leaks | — | 1989-06-13 |
| 4753108 | Apparatus for testing connections between pieces of piping for impermeability to gases | — | 1988-06-28 |