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Priority claimed from DE3837331Aexternal-prioritypatent/DE3837331A1/en
Priority claimed from DE3907046Aexternal-prioritypatent/DE3907046A1/en
Priority claimed from DE3929089Aexternal-prioritypatent/DE3929089A1/en
Application filed by Fan Engineering GmbhfiledCriticalFan Engineering Gmbh
Priority claimed from EP89119460Aexternal-prioritypatent/EP0367037B1/en
Application grantedgrantedCritical
Publication of ATE98929T1publicationCriticalpatent/ATE98929T1/en