Michael Ostkamper

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Bochum, DE

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Patents Grantslast 30 patents

Information Patent Grant
Device, preferably for underground purposes, to transfer informatio...
- Patent number 4,784,229
- Issue date Nov 15, 1988
- Schwing Hydraulik Elektronik GmbH
- Michael Ostkamper
- E21 - EARTH DRILLING MINING