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Priority claimed from GB878720976Aexternal-prioritypatent/GB8720976D0/en
Priority claimed from GB888818285Aexternal-prioritypatent/GB8818285D0/en
Application filed by Bespak PlcfiledCriticalBespak Plc
Priority claimed from EP88308016Aexternal-prioritypatent/EP0308100B1/en
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Publication of ATE76381T1publicationCriticalpatent/ATE76381T1/en