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Application filed by Vid O Kh Videv, Ivan P Stoev, Boris I Khristov, Jjosif M Levi, Pet R G Trenev, Chavdar M DimitrovfiledCriticalVid O Kh Videv
Priority to BG8357288ApriorityCriticalpatent/BG45525A1/xx
Publication of BG45525A1publicationCriticalpatent/BG45525A1/xx