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Jurgen Lehrke
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Herzogenrath, DE
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Patent Grant
Method for the utilization of ash from coal-fired plants
Patent number
5,797,496
Issue date
Aug 25, 1998
SICOWA Verfahrenstechnik fur Baustoffe GmbH & Co., KG
Gunther Kirchen
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES