Norbert Holken

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Altlunen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Ball-and-socket type connections for use with mining apparatus
- Patent number 4,004,771
- Issue date Jan 25, 1977
- Gewerkschaft Eisenhutte Westfalia
- Lubomir Plevak
- E21 - EARTH DRILLING MINING