Ulrich Hoffmann

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Duisburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Hot rolled and air hardened steel for manufacturing structural tube...
- Patent number 5,370,751
- Issue date Dec 6, 1994
- Mannesmann Aktiengesellschaft
- Ingo von Hagen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...