Waldemar Bluethgen

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Braunfels, DE

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Patents Grantslast 30 patents

Information Patent Grant
Use of an oxide ceramic material for compression molds for shaping...
- Patent number 4,889,548
- Issue date Dec 26, 1989
- Ernst Leitz Wetzlar GmbH
- Jochen Kriegesmann
- C03 - GLASS MINERAL OR SLAG WOOL