Helmut Langenberg

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Waltrop, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of, and apparatus for, winning mineral material
- Patent number 4,391,470
- Issue date Jul 5, 1983
- Gewerkschaft Eisenhutte Westfalia
- Helmut Langenberg
- E21 - EARTH DRILLING MINING
Information Patent Grant
Conveyors for use in mineral mining installations
- Patent number 4,241,824
- Issue date Dec 30, 1980
- Gewerkschaft Eisenhutte Westfalia
- Werner Georg
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL