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Application filedfiledCritical
Priority to CS406972ApriorityCriticalpatent/CS162965B1/cs
Priority to DD17143073Aprioritypatent/DD105029A1/xx
Priority to DE19732329734prioritypatent/DE2329734A1/de
Priority to AT516273Aprioritypatent/AT334694B/de
Publication of CS162965B1publicationCriticalpatent/CS162965B1/cs