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Gerhard Walter
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Erkrath, DE
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last 30 patents
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Use of ethylene oxide/propylene oxide block copolymers in hydraulic...
Patent number
5,360,841
Issue date
Nov 1, 1994
Henkel Kommanditgesellschaft auf Aktien
Bernhard Knop
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES