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Application filed by Blahoslav Ing Palan, Jan Ing Bursik, Karel Ing HorkyfiledCriticalBlahoslav Ing Palan
Priority to CS877997ApriorityCriticalpatent/CS272113B1/en
Publication of CS799787A1publicationCriticalpatent/CS799787A1/en
Publication of CS272113B1publicationCriticalpatent/CS272113B1/en