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Priority claimed from GB848405053Aexternal-prioritypatent/GB8405053D0/en
Priority claimed from GB848410438Aexternal-prioritypatent/GB8410438D0/en
Application filed by Samuel Trevor MasonfiledCriticalSamuel Trevor Mason
Priority claimed from EP85301083Aexternal-prioritypatent/EP0154439B1/de
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Publication of ATE31764T1publicationCriticalpatent/ATE31764T1/de