Konrad Gries

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Hohenhameln, DE

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Patents Grantslast 30 patents

Information Patent Grant
Piping for the completion of a groundwater monitoring site
- Patent number 5,246,070
- Issue date Sep 21, 1993
- Preussag Aktiengesellschaft
- Horst Greve
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for taking samples from a groundwater monitori...
- Patent number 5,224,389
- Issue date Jul 6, 1993
- Grundfos International A/S
- Niels D. Jensen
- E21 - EARTH DRILLING MINING