Walter R. Heiker

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Wertheim-Sonderriet, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for heating carbon blanks
- Patent number 4,482,314
- Issue date Nov 13, 1984
- Sigri Elektrographit GmbH
- Hans-Joachim Giese
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES