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Priority claimed from US05/448,126external-prioritypatent/US3954963A/en
Priority claimed from AT162575Aexternal-prioritypatent/ATA162575A/de
Application filed by Shell Int ResearchfiledCriticalShell Int Research
Priority to AT621877ApriorityCriticalpatent/ATA621877A/de
Publication of ATA621877ApublicationCriticalpatent/ATA621877A/de