Gabriel D. Hernandez

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Maracaibo-Edo. Zulia, VE

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Patents Grantslast 30 patents

Information Patent Grant
Blowout preventer for use in combination with a deep well pump
- Patent number 4,637,458
- Issue date Jan 20, 1987
- Maraven, S.A.
- Gabriel D. Hernandez
- E21 - EARTH DRILLING MINING