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Application filed by Hrzan Emil, Petrasek Petr, Kuna Vaclav, Miroslav PrerostfiledCriticalHrzan Emil
Priority to CS883779ApriorityCriticalpatent/CS267017B1/en
Publication of CS377988A1publicationCriticalpatent/CS377988A1/en
Publication of CS267017B1publicationCriticalpatent/CS267017B1/en