Willi Kerth

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Flurlingen, CH

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing low earing aluminum alloy strip on strip cast...
- Patent number 4,238,248
- Issue date Dec 9, 1980
- Swiss Aluminium Ltd.
- Ivan Gyongyos
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...