Ulrich Hense

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Hambuhren, DE

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Patents Grantslast 30 patents

Information Patent Grant
Deep-borehole drilling device with magnetic coupling
- Patent number 4,732,225
- Issue date Mar 22, 1988
- Norton Christensen, Inc.
- Rainer Jurgens
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for remote transmission of information
- Patent number 4,698,794
- Issue date Oct 6, 1987
- Eastman Christensen
- Volker Kruger
- E21 - EARTH DRILLING MINING