|
| US4047568 | 26. Apr. 1976 | 13. Sept. 1977 | International Enterprises, Inc. | Method and apparatus for cutting and retrieving casing from a well bore |
| US4284137 | 7. Jan. 1980 | 18. Aug. 1981 | | Anti-kick, anti-fall running tool and instrument hanger and tubing packoff tool |
| US6056051 | 4. Febr. 1998 | 2. Mai 2000 | Baker Hughes, Incorporated | Internal coiled tubing connection with torque capability |
| US7431080 | 30. Juni 2003 | 7. Okt. 2008 | Baker Hughes Incorporated | Anchor device to relieve tension from the rope socket prior to perforating a well |
