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Priority claimed from NL8503220Aexternal-prioritypatent/NL8503220A/en
Application filed by Schelfhorst Hendrik WfiledCriticalSchelfhorst Hendrik W
Priority claimed from EP19860106949external-prioritypatent/EP0229867B1/en
Application grantedgrantedCritical
Publication of ATE53090T1publicationCriticalpatent/ATE53090T1/en