Ernst Tetzlaff

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Heidenheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for the manufacture of vitreous carbon bodies
- Patent number 4,698,189
- Issue date Oct 6, 1987
- Sigri GmbH
- Ernst Tetzlaff
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES