Hans Krapfenbauer

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Kusnacht, AT

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for a rolling of hollow articles
- Patent number 5,765,419
- Issue date Jun 16, 1998
- Ernst Grob AG
- Hans Krapfenbauer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...