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Application filed by Henrich Hrubala, Arpad Matejka, Florovic Stanislav, Alexej Ing LetenayfiledCriticalHenrich Hrubala
Priority to CS874182ApriorityCriticalpatent/CS261655B1/en
Publication of CS418287A1publicationCriticalpatent/CS418287A1/en
Publication of CS261655B1publicationCriticalpatent/CS261655B1/en