Adolf Kindsgrab

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Essen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for producing a hollow body from solid round steel
- Patent number 6,006,570
- Issue date Dec 28, 1999
- Mannesmann AG
- Rolf Kummerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...