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Priority claimed from DE19691924485external-prioritypatent/DE1924485B2/de
Priority claimed from AT817669Aexternal-prioritypatent/AT298997B/de
Application filed by Expresso Benelux S P R LfiledCriticalExpresso Benelux S P R L
Publication of BE749364ApublicationCriticalpatent/BE749364A/de