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Priority claimed from GB8726500Aexternal-prioritypatent/GB2212181B/en
Priority claimed from GB888802835Aexternal-prioritypatent/GB8802835D0/en
Application filed by David Patrick PaynefiledCriticalDavid Patrick Payne
Priority claimed from EP19880310684external-prioritypatent/EP0316199B1/de
Application grantedgrantedCritical
Publication of ATE79148T1publicationCriticalpatent/ATE79148T1/de