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Priority claimed from GB868630207Aexternal-prioritypatent/GB8630207D0/en
Priority claimed from GB878707862Aexternal-prioritypatent/GB8707862D0/en
Priority claimed from GB878719553Aexternal-prioritypatent/GB8719553D0/en
Application filed by English Glass Co LtdfiledCriticalEnglish Glass Co Ltd
Priority claimed from EP87311096Aexternal-prioritypatent/EP0274256B1/de
Application grantedgrantedCritical
Publication of ATE74107T1publicationCriticalpatent/ATE74107T1/de