Klaus Spies

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Aachen-Schmithof, DE

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Patents Grantslast 30 patents

Information Patent Grant
Device for producing drilling holes from an angled position with re...
- Patent number 4,905,777
- Issue date Mar 6, 1990
- Rudolf Hausherr & Sohne GmbH & Co. KG
- Klaus Spies
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flexible rock anchor
- Patent number 4,798,501
- Issue date Jan 17, 1989
- Rudolf Hausherr & Sohne GmbH & Co. KG
- Klaus Spies
- E21 - EARTH DRILLING MINING