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Priority claimed from DE19813147109external-prioritypatent/DE3147109A1/en
Priority claimed from DE19813151209external-prioritypatent/DE3151209C2/en
Priority claimed from DE19823221945external-prioritypatent/DE3221945A1/en
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority claimed from EP82110773Aexternal-prioritypatent/EP0080681B1/en
Application grantedgrantedCritical
Publication of ATE21312T1publicationCriticalpatent/ATE21312T1/en