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Priority claimed from DE8800643Uexternal-prioritypatent/DE8800643U1/de
Priority claimed from DE3832490Aexternal-prioritypatent/DE3832490A1/de
Application filed by Berliner Wasser BetriebefiledCriticalBerliner Wasser Betriebe
Application grantedgrantedCritical
Publication of ATE92832T1publicationCriticalpatent/ATE92832T1/de