Winand Hanelt

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Duren, DE

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Patents Grantslast 30 patents

Information Patent Grant
Phosphating process for zinc-plated metals
- Patent number 4,497,668
- Issue date Feb 5, 1985
- Gerhard Collardin GmbH
- Raschad Mady
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...