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Application filed by Betak Jaroslav, Stanislav Danek, Zdenek Ing Hradil, Pavel Ing HrstkafiledCriticalBetak Jaroslav
Priority to CS828765ApriorityCriticalpatent/CS252103B1/cs
Publication of CS876582A1publicationCriticalpatent/CS876582A1/cs
Publication of CS252103B1publicationCriticalpatent/CS252103B1/cs