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Priority claimed from JP59077008Aexternal-prioritypatent/JPS60219036A/ja
Priority claimed from SE8405885Aexternal-prioritypatent/SE455773B/sv
Application filed by Tetra Pak AbfiledCriticalTetra Pak Ab
Priority claimed from EP85104234Aexternal-prioritypatent/EP0159609B1/de
Application grantedgrantedCritical
Publication of ATE71582T1publicationCriticalpatent/ATE71582T1/de