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Priority claimed from GB858505173Aexternal-prioritypatent/GB8505173D0/en
Priority claimed from GB868600258Aexternal-prioritypatent/GB8600258D0/en
Application filed by Gallaher LtdfiledCriticalGallaher Ltd
Priority claimed from EP86301379Aexternal-prioritypatent/EP0196775B1/de
Application grantedgrantedCritical
Publication of ATE42963T1publicationCriticalpatent/ATE42963T1/de