Gerd Pfeiffer

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Mulheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Procedure and equipment for the manufacture of pipes with external...
- Patent number 4,445,354
- Issue date May 1, 1984
- Gerd Pfeiffer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Operating a rolling mill working on seamless tubing
- Patent number 4,404,832
- Issue date Sep 20, 1983
- Mannesmann Aktiengesellschaft
- Gerd Pfeiffer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...