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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for preparing, more particularly for the cooli...
Patent number
4,361,405
Issue date
Nov 30, 1982
Alfelder Maschinen- und Modell-Fabrik Kunkel, Wagner & Co. KG
Rolf Wedek
B28 - WORKING CEMENT, CLAY, OR STONE
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Patent Grant
Production of sand moulds
Patent number
4,286,937
Issue date
Sep 1, 1981
Alfelder Maschinen- und Modell-Fabrik Kunkel, Wagner & Co. KG
Walter Ahrens
B22 - CASTING POWDER METALLURGY