Weinfried Steyvers

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Dusselford-Oberkassel, DE

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Patents Grantslast 30 patents

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Indirect metal extrusion and tube press and a sealing plate and a p...
- Patent number 4,212,182
- Issue date Jul 15, 1980
- Schloemann-Siemag Aktiengesellschaft
- Weinfried Steyvers
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...