Willi Sporenberg

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Hemer, DT

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Patents Grantslast 30 patents

Information Patent Grant
Device for conveying metal sheets for affixation to a windup drum f...
- Patent number 4,022,367
- Issue date May 10, 1977
- Sundwiger Eisenhutte Maschinenfabrik Grah & Co.
- Willi Sporenberg
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...