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Application filed by Frantisek Babunek, Vladimir Ing BabunekfiledCriticalFrantisek Babunek
Priority to CS863194ApriorityCriticalpatent/CS259463B1/en
Publication of CS319486A1publicationCriticalpatent/CS319486A1/en
Publication of CS259463B1publicationCriticalpatent/CS259463B1/en