Burckhardt Elsner

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Lunen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Mine roof support assembly
- Patent number 4,526,495
- Issue date Jul 2, 1985
- Gewerkschaft Eisenhutte Westfalia
- Kunibert Becker
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof supports
- Patent number 4,347,021
- Issue date Aug 31, 1982
- Gewerkschaft Eisenhutte Westfalia
- Burckhardt Elsner
- E21 - EARTH DRILLING MINING