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Application filed by Николай К. Георгиев, Димитър Й. ИвановfiledCriticalНиколай К. Георгиев
Priority to BG104295UpriorityCriticalpatent/BG544Y1/bg
Publication of BG104295UpublicationCriticalpatent/BG104295U/bg
Publication of BG544Y1publicationCriticalpatent/BG544Y1/bg