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Application filed by Pokorny Frantisek, Bures Zdenek, Frantisek Ing VeinfurtfiledCriticalPokorny Frantisek
Priority to CS845210ApriorityCriticalpatent/CS248405B1/en
Publication of CS521084A1publicationCriticalpatent/CS521084A1/en
Publication of CS248405B1publicationCriticalpatent/CS248405B1/en