Rudolf Hoffmann

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Krefeld, DT

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Patents Grantslast 30 patents

Information Patent Grant
Rolling of billets
- Patent number 4,067,220
- Issue date Jan 10, 1978
- Maschinenfabrik Sack GmbH
- Rudolf Hoffmann
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Continuous casting apparatus for slabs
- Patent number 4,036,284
- Issue date Jul 19, 1977
- Rudolf Hoffmann
- B22 - CASTING POWDER METALLURGY