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Application filed by Josef Sodomka, Jaroslav Rndr Csc Petru, Vratislav Ing MikafiledCriticalJosef Sodomka
Priority to CS861370ApriorityCriticalpatent/CS259321B1/en
Publication of CS137086A1publicationCriticalpatent/CS137086A1/en
Publication of CS259321B1publicationCriticalpatent/CS259321B1/en