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Priority claimed from GB838300809Aexternal-prioritypatent/GB8300809D0/en
Priority claimed from PCT/GB1983/000116external-prioritypatent/WO1983003700A1/en
Application filed by Sound Attenuators LtdfiledCriticalSound Attenuators Ltd
Publication of NO834426LpublicationCriticalpatent/NO834426L/en
Publication of NO159326BpublicationCriticalpatent/NO159326B/en
Publication of NO159326CpublicationCriticalpatent/NO159326C/en