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Priority claimed from GB888814418Aexternal-prioritypatent/GB8814418D0/en
Application filed by Martinus Adrianus Breij, John William ShanksfiledCriticalMartinus Adrianus Breij
Priority claimed from EP89305860Aexternal-prioritypatent/EP0347124B1/en
Application grantedgrantedCritical
Publication of ATE75277T1publicationCriticalpatent/ATE75277T1/en