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Michael R. Smals
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Herten, NL
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last 30 patents
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Patent Grant
Installation for extracting granular material in a predetermined co...
Patent number
5,076,702
Issue date
Dec 31, 1991
B.V. Grint - en Zandexploitatie Maatschappij v/h Gebrs. Smals
Michael R. Smals
B28 - WORKING CEMENT, CLAY, OR STONE
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Patent Grant
Method for obtaining a base material for building mortar
Patent number
4,828,393
Issue date
May 9, 1989
501 B.V. Grint
Michael R. Smals
B28 - WORKING CEMENT, CLAY, OR STONE