Roland Krengel

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Kerken, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process and device for preventing nonparallelism in beam sections
- Patent number 5,792,418
- Issue date Aug 11, 1998
- Mannesmann Aktiengesellschaft
- Roland Krengel
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...