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Application filed by Sedlisky Otakar, Petr SkripskyfiledCriticalSedlisky Otakar
Priority to CS875923ApriorityCriticalpatent/CS265170B1/en
Publication of CS592387A1publicationCriticalpatent/CS592387A1/en
Publication of CS265170B1publicationCriticalpatent/CS265170B1/en