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Priority claimed from DE2237904Aexternal-prioritypatent/DE2237904C3/de
Priority claimed from DE2253276Aexternal-prioritypatent/DE2253276C2/de
Application filed by Басф Аг (Фирма)filedCriticalБасф Аг (Фирма)
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Publication of SU544365A3publicationCriticalpatent/SU544365A3/ru