Pablo Antonio Letelier Parga

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Providencia/Santiago, CL

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Patents Grantslast 30 patents

Information Patent Grant
Arrangement for extracting extraction products in underground extra...
- Patent number 7,779,984
- Issue date Aug 24, 2010
- Bucyrus DBT Europe GmbH
- Harry Martin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and device for extracting extraction products in underground...
- Patent number 7,350,874
- Issue date Apr 1, 2008
- DBT GmbH
- Reinhold Brüggemann
- E21 - EARTH DRILLING MINING