Gerhard von Klinggraff

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Neukirchen-Vluyn, DE

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Patents Grantslast 30 patents

Information Patent Grant
Walking mine support
- Patent number 4,183,700
- Issue date Jan 15, 1980
- Bochumer Eisenhutte Heintzmann GmbH
- Gerhard von Klinggraff
- E21 - EARTH DRILLING MINING
Information Patent Grant
Auxiliary walking mine support
- Patent number 4,175,891
- Issue date Nov 27, 1979
- Bochumer Eisenhutte Heintzmann GmbH & Co
- Gerhard von Klinggraff
- E21 - EARTH DRILLING MINING