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Priority to DD16657272ApriorityCriticalpatent/DD104917A1/xx
Priority to HUCE000966prioritypatent/HU169496B/hu
Priority to CS744273Aprioritypatent/CS182356B1/cs
Priority to SU1973575Aprioritypatent/SU560084A1/ru
Priority to RO7648073Aprioritypatent/RO60687A/ro
Publication of DD104917A1publicationCriticalpatent/DD104917A1/xx