Leggett; Henry H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leggett; Henry H..The latest application filed is for "method and apparatus for treating logging cable".
- Leggett; Henry H. - Livingston TX
- LEGGETT; HENRY H. - Brenham TX
- Leggett; Henry H. - Hallsville TX
- Leggett; Henry H. - Longview TX
- Leggett; Henry H. - Singapore SG
- Leggett; Henry H. - Setia Mansion SG
| Patent | Date |
|---|---|
| Valve mechanism having tool trap Grant 10,030,482 - Leggett July 24, 2 | 2018-07-24 |
| Method And Apparatus For Treating Logging Cable App 20170198970 - LEGGETT; HENRY H. ; et al. | 2017-07-13 |
| Method And Apparatus For Treating Logging Cable App 20150371741 - LEGGETT; HENRY H. | 2015-12-24 |
| Valve Mechanism Having Tool Trap App 20150233212 - Leggett; Henry H. | 2015-08-20 |
| One-piece ram element block for wireline blowout preventers Grant 6,394,460 - Leggett , et al. May 28, 2 | 2002-05-28 |
| Hydraulically energized wireline blowout preventer Grant 5,287,879 - Leggett , et al. February 22, 1 | 1994-02-22 |
| Wireline blowout preventer having mechanical and hydraulic sealing Grant 4,938,290 - Leggett , et al. July 3, 1 | 1990-07-03 |
| Wireline safety mechanism for wireline tools Grant 4,886,115 - Leggett , et al. December 12, 1 | 1989-12-12 |
| Downhole shuttle valve for wells Grant 4,846,272 - Leggett July 11, 1 | 1989-07-11 |
| Mechanical latching device operated by dead weight and tension Grant 4,828,023 - Leggett May 9, 1 | 1989-05-09 |
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