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Application filedfiledCritical
Priority to DD17842974ApriorityCriticalpatent/DD110827A1/xx
Publication of DD110827A1publicationCriticalpatent/DD110827A1/xx
Priority to HU75SI00001465Aprioritypatent/HU171178B/hu
Priority to BG2990275Aprioritypatent/BG23070A1/xx
Priority to CS320975Aprioritypatent/CS176767B1/cs
Priority to SU752131421Aprioritypatent/SU625996A1/ru