Heinz-Theo Walbrohl

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D-5300 Bonn 7, DE

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Patents Grantslast 30 patents

Information Patent Grant
Device for opening and supporting a headway
- Patent number 5,269,628
- Issue date Dec 14, 1993
- Heinz-Theo Walbrohl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Automatically advancing supporting and sliding form for introducing...
- Patent number 5,253,955
- Issue date Oct 19, 1993
- Heinz-Theo Walbrohl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Knife shield driving device and method for the excavating and/or fi...
- Patent number 4,830,535
- Issue date May 16, 1989
- Heinz-Theo Walbrohl
- E21 - EARTH DRILLING MINING