Dietrich Ulrich

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Nestlake, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for making hollow billets into tubes
- Patent number 5,016,456
- Issue date May 21, 1991
- Lonza Ltd.
- Hansjorg Furrer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...