Norbert Cibis

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Frankfurt am Main, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing a bubble-free vitreous material
- Patent number 4,414,014
- Issue date Nov 8, 1983
- Heraeus Quarzschmelze GmbH
- Rolf Bruning
- C03 - GLASS MINERAL OR SLAG WOOL