|
| US4663628 | 6. Mai 1985 | 5. Mai 1987 | Halliburton Company | Method of sampling environmental conditions with a self-contained downhole gauge system |
| US4665398 | 6. Mai 1985 | 12. Mai 1987 | Halliburton Company | Method of sampling and recording information pertaining to a physical condition detected in a well bore |
| US4709234 | 6. Mai 1985 | 24. Nov. 1987 | Halliburton Company | Power-conserving self-contained downhole gauge system |
| US4866607 | 6. Mai 1985 | 12. Sept. 1989 | Halliburton Company | Self-contained downhole gauge system |
| US4909320 | 14. Okt. 1988 | 20. März 1990 | Drilex Systems, Inc. | Detonation assembly for explosive wellhead severing system |
| US5153832 | 21. Juli 1989 | 6. Okt. 1992 | Halliburton Company | Self-containing downhole gauge system |
| US5337234 | 5. Mai 1992 | 9. Aug. 1994 | Halliburton Company | Self-contained downhole gauge system |
