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Priority claimed from GB888826522Aexternal-prioritypatent/GB8826522D0/en
Application filed by E M & I Safety Systems LtdfiledCriticalE M & I Safety Systems Ltd
Priority claimed from EP89912117Aexternal-prioritypatent/EP0442913B1/de
Application grantedgrantedCritical
Publication of ATE97585T1publicationCriticalpatent/ATE97585T1/de