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Priority claimed from GB878711479Aexternal-prioritypatent/GB8711479D0/en
Priority claimed from PCT/GB1988/000381external-prioritypatent/WO1988009061A2/en
Application filed by Evetts Jan E, Derek John FrayfiledCriticalEvetts Jan E
Publication of DK569789ApublicationCriticalpatent/DK569789A/en
Publication of DK569789D0publicationCriticalpatent/DK569789D0/en