Christian Klempel

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Mulheim an der Ruhr, DE

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Patents Grantslast 30 patents

Information Patent Grant
Piercing mandrel having an improved service life for producing seam...
- Patent number 9,937,540
- Issue date Apr 10, 2018
- Vallourec Deutschland GmbH
- Winfried Braun
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
PIERCING MANDREL HAVING AN IMPROVED SERVICE LIFE FOR PRODUCING SEAM...
- Publication number 20160346820
- Publication date Dec 1, 2016
- Winfried Braun
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...