Eduardo de Melo Sanches

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Rio de Janeiro, BR

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Patents Grantslast 30 patents

Information Patent Grant
Integrated base for oil drilling and production work
- Patent number 5,441,112
- Issue date Aug 15, 1995
- Petroleo Brasilerio S.A. - Petrobras
- Eduardo de Melo Sanches
- E21 - EARTH DRILLING MINING