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Application filed by Vladimir Javurek, Bures Zdenek, Sebor Vaclav, Vrba VladimirfiledCriticalVladimir Javurek
Priority to CS836842ApriorityCriticalpatent/CS241438B1/en
Publication of CS684283A1publicationCriticalpatent/CS684283A1/en
Publication of CS241438B1publicationCriticalpatent/CS241438B1/en