Engelbert Overkott

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Gevelsberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Silica brick and process for producing same
- Patent number 4,866,015
- Issue date Sep 12, 1989
- Dr. C. Otto Feuerfest GmbH
- Hans-Joachim Koschlig
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES