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Priority claimed from DE2902885Aexternal-prioritypatent/DE2902885C2/en
Application filed by Sds-Elektro Gmbh, Hans SauerfiledCriticalSds-Elektro Gmbh
Priority claimed from EP80100371Aexternal-prioritypatent/EP0013991B2/en
Application grantedgrantedCritical
Publication of ATE4010T1publicationCriticalpatent/ATE4010T1/en