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Priority claimed from DE19813137847external-prioritypatent/DE3137847C2/en
Priority claimed from DE3137846Aexternal-prioritypatent/DE3137846C2/en
Priority claimed from DE19813137845external-prioritypatent/DE3137845C2/en
Application filed by Boecker Albert Gmbh & Co KgfiledCriticalBoecker Albert Gmbh & Co Kg
Priority claimed from EP82108665Aexternal-prioritypatent/EP0080038B1/en
Application grantedgrantedCritical
Publication of ATE20726T1publicationCriticalpatent/ATE20726T1/en