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Application filed by Rudolf Ing Cervenka, Novotny Vladimir, Jiri Ing FigurafiledCriticalRudolf Ing Cervenka
Priority to CS887416ApriorityCriticalpatent/CS270496B1/en
Publication of CS741688A1publicationCriticalpatent/CS741688A1/en
Publication of CS270496B1publicationCriticalpatent/CS270496B1/en