Gerhard Schorradt

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Wuppertal, DE

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic shield-type support
- Patent number 4,313,698
- Issue date Feb 2, 1982
- Hermann Hemscheidt Maschinenfabrik GmbH & Co.
- Alfred Maykemper
- E21 - EARTH DRILLING MINING