Martin Herrenknecht

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Schwanau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Tunneling machine with center cutter and debris removing means
- Patent number 5,437,500
- Issue date Aug 1, 1995
- Herrenknecht GmbH
- Gebhard Lehmann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Recoverable tunnelling machine
- Patent number 5,184,918
- Issue date Feb 9, 1993
- Herrenknecht GmbH
- Martin Herrenknecht
- E21 - EARTH DRILLING MINING