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Priority to CS66771ApriorityCriticalpatent/CS149398B1/cs
Priority to BG1959372Aprioritypatent/BG18560A1/xx
Priority to HUVI000844prioritypatent/HU163065B/hu
Priority to SU1747113Aprioritypatent/SU479122A1/ru
Priority to DD16056072Aprioritypatent/DD96614A1/xx
Publication of CS149398B1publicationCriticalpatent/CS149398B1/cs