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Publication date
Application filed by Josef Ing Leitmann, Karel Ing Csc HanzafiledCriticalJosef Ing Leitmann
Priority to CS841984ApriorityCriticalpatent/CS238543B1/en
Publication of CS198484A1publicationCriticalpatent/CS198484A1/en
Publication of CS238543B1publicationCriticalpatent/CS238543B1/en