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Application filed by Exner Karel, Jaroslav Ing Zakopal, Jiri KristenfiledCriticalExner Karel
Priority to CS873018ApriorityCriticalpatent/CS262071B1/en
Publication of CS301887A1publicationCriticalpatent/CS301887A1/en
Publication of CS262071B1publicationCriticalpatent/CS262071B1/en