Hugo Roberto Marquez

Follow

Person

Rio de Janeiro, BR

People

Patents Grantslast 30 patents

Information Patent Grant
Passive vertical drilling motor stabilization
- Patent number 7,650,952
- Issue date Jan 26, 2010
- Smith International, Inc.
- Nigel Evans
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Passive vertical drilling motor stabilization
- Publication number 20080047754
- Publication date Feb 28, 2008
- Smith International, Inc.
- Nigel Evans
- E21 - EARTH DRILLING MINING