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Priority claimed from CH4472/86Aexternal-prioritypatent/CH671796A5/en
Priority claimed from CH5004/86Aexternal-prioritypatent/CH672280A5/en
Application filed by Wfs Handels AgfiledCriticalWfs Handels Ag
Priority claimed from EP87907323Aexternal-prioritypatent/EP0288531B1/en
Application grantedgrantedCritical
Publication of ATE75515T1publicationCriticalpatent/ATE75515T1/en