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Application filed by Stanislav Jiri, Exner Milan, Augustin Frey, Kult Jaroslav, Josef Ing MatuskafiledCriticalStanislav Jiri
Priority to CS887828ApriorityCriticalpatent/CS269498B1/en
Publication of CS782888A1publicationCriticalpatent/CS782888A1/en
Publication of CS269498B1publicationCriticalpatent/CS269498B1/en