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Application filed by Людмил М. Йорданов, Цанко М. ВасилевfiledCriticalЛюдмил М. Йорданов
Priority to BG107030UpriorityCriticalpatent/BG665Y1/en
Publication of BG107030UpublicationCriticalpatent/BG107030U/en
Publication of BG665Y1publicationCriticalpatent/BG665Y1/en