Otto-Ernst Glaesmann

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Dortmund, DE

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Patents Grantslast 30 patents

Information Patent Grant
Tubular lost borehole closure
- Patent number 4,362,440
- Issue date Dec 7, 1982
- Bergwerksverband GmbH
- Otto-Ernst Glaesmann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tubular one-way closure for injecting a material into a hole
- Patent number 4,146,094
- Issue date Mar 27, 1979
- Bergwerksverband GmbH
- Walter Benedum
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING