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Application filed by Vladimir Ing, Josefa Csc Kreckova, Berta Ing TichafiledCriticalVladimir Ing
Priority to CS8710040ApriorityCriticalpatent/CS270967B1/en
Publication of CS1004087A1publicationCriticalpatent/CS1004087A1/en
Publication of CS270967B1publicationCriticalpatent/CS270967B1/en