Gunter Holzapfel

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Dortmund, DE

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Patents Grantslast 30 patents

Information Patent Grant
Water tank having electric heating element and cathodic corrosion p...
- Patent number 4,255,647
- Issue date Mar 10, 1981
- Vereinigte Elektrizitatswerke Westfalen AG
- Hans Rickert
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...