Jeffrey J. Konczak

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Valparaiso, IN, US

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Patents Grantslast 30 patents

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Process for recycling gypsum-based waste material into readily crus...
- Patent number 6,471,767
- Issue date Oct 29, 2002
- American International Materials, Ltd.
- Jeffrey J. Konczak
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES