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Application filed by Zdenek Ing Halaska, Antonin Raida, Milan KonarikfiledCriticalZdenek Ing Halaska
Priority to CS877809ApriorityCriticalpatent/CS262149B1/en
Publication of CS780987A1publicationCriticalpatent/CS780987A1/en
Publication of CS262149B1publicationCriticalpatent/CS262149B1/en