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Application filed by Havranek Josef, Bejrova Vera, Vokral VaclavfiledCriticalHavranek Josef
Priority to CS863275ApriorityCriticalpatent/CS269821B1/cs
Publication of CS327586A1publicationCriticalpatent/CS327586A1/cs
Publication of CS269821B1publicationCriticalpatent/CS269821B1/cs