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Application filed by Jan Ing Tichy, Peter Ing Synovec, Vladimir Ing VargafiledCriticalJan Ing Tichy
Priority to CS842664ApriorityCriticalpatent/CS245315B1/en
Publication of CS266484A1publicationCriticalpatent/CS266484A1/en
Publication of CS245315B1publicationCriticalpatent/CS245315B1/en