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Application filed by Bohumir Ing Chvatal, Otta Ing HermfiledCriticalBohumir Ing Chvatal
Priority to CS8610292ApriorityCriticalpatent/CS259617B1/en
Publication of CS1029286A1publicationCriticalpatent/CS1029286A1/en
Publication of CS259617B1publicationCriticalpatent/CS259617B1/en