Gebr. Knauf Westdeutsche Gipswerke

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Patents Grantslast 30 patents

Information Patent Grant
Process for the manufacture of stabilized, hardenable calcium sulph...
- Patent number 4,039,616
- Issue date Aug 2, 1977
- Gebr. Knauf Westdeutsche Gipswerke
- Kurt Scheel
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Multi-layer plasterboard
- Patent number 3,993,822
- Issue date Nov 23, 1976
- Gebr. Knauf Westdeutsche Gipswerke
- Alfons Knauf
- B28 - WORKING CEMENT, CLAY, OR STONE