Willy Watermann

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Dortmund, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for monitoring the load on hydraulic powered shie...
- Patent number 6,056,481
- Issue date May 2, 2000
- DBT Automation GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and device for moving a shield-type support trestle
- Patent number 4,946,316
- Issue date Aug 7, 1990
- Klockner-Becorit GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Roof cap assembly with supporting cylinders for roof support mechanism
- Patent number 4,773,795
- Issue date Sep 27, 1988
- Klockner-Becorit GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Foot element and cooperable strut element for use in a roof support...
- Patent number 4,749,311
- Issue date Jun 7, 1988
- Klockner-Becorit GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Levelling ram for roof-shield mine support systems
- Patent number 4,586,851
- Issue date May 6, 1986
- Kloeckner-Becorit GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Shield-type support frame
- Patent number 4,557,635
- Issue date Dec 10, 1985
- Klockner-Becorit GmbH
- Willy Watermann
- E21 - EARTH DRILLING MINING