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Application filedfiledCritical
Priority to DD16463072ApriorityCriticalpatent/DD104567A1/xx
Priority to RO75339Aprioritypatent/RO86243B/ro
Priority to SU1949514Aprioritypatent/SU515841A1/ru
Priority to CS525973Aprioritypatent/CS170922B1/cs
Priority to BG2417873Aprioritypatent/BG22598A1/xx
Publication of DD104567A1publicationCriticalpatent/DD104567A1/xx