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Fernando Arturo Geister Bühlmann
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Buin-Region Metropolitana, CL
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last 30 patents
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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
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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