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Detlev Lettau
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Dortmund, DE
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last 30 patents
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Patent Grant
Shield cap for a shield-type mining support
Patent number
8,215,876
Issue date
Jul 10, 2012
Caterpillar Global Mining Europe GmbH
Siamak Onsori
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
SHIELD CAP FOR A SHIELD-TYPE MINING SUPPORT
Publication number
20110142551
Publication date
Jun 16, 2011
BUCYRUS EUROPE GMBH
Siamak Onsori
E21 - EARTH DRILLING MINING