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Application filed by Martoch Josef, Vladimir Ing Kugker, Zdena LochmanovafiledCriticalMartoch Josef
Priority to CS838018ApriorityCriticalpatent/CS238922B1/en
Publication of CS801883A1publicationCriticalpatent/CS801883A1/en
Publication of CS238922B1publicationCriticalpatent/CS238922B1/en