Werner Ewald

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Wulfrath, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing calcium hydroxide
- Patent number 4,636,379
- Issue date Jan 13, 1987
- Rheinische Kalksteinwerke GmbH
- Heinz Bestek
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES