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Priority claimed from DE8703983Uexternal-prioritypatent/DE8703983U1/de
Priority claimed from DE8710016Uexternal-prioritypatent/DE8710016U1/de
Priority claimed from DE8710017Uexternal-prioritypatent/DE8710017U1/de
Application filed by Viessmann Werke KgfiledCriticalViessmann Werke Kg
Priority claimed from EP88104068Aexternal-prioritypatent/EP0283901B1/de
Application grantedgrantedCritical
Publication of ATE59095T1publicationCriticalpatent/ATE59095T1/de