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Application filed by Josef Dipl Tech Havelka, Josef Ing PrchalfiledCriticalJosef Dipl Tech Havelka
Priority to CS878346ApriorityCriticalpatent/CS264533B1/en
Publication of CS834687A1publicationCriticalpatent/CS834687A1/en
Publication of CS264533B1publicationCriticalpatent/CS264533B1/en