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Application filed by Ervin Ing Vyskovice Mickerts, Martinek Jiri, Boris Ing Idzikovsky, Molinek Bronislav, Miloslav Ing Tvrdy, Helena Ing Vltkova, Jaroslav Ing Csc ParmenskyfiledCriticalErvin Ing Vyskovice Mickerts
Priority to CS864291ApriorityCriticalpatent/CS257171B1/en
Publication of CS429186A1publicationCriticalpatent/CS429186A1/en
Publication of CS257171B1publicationCriticalpatent/CS257171B1/en