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Priority claimed from DE4006492Aexternal-prioritypatent/DE4006492C2/de
Priority claimed from DE4009773Aexternal-prioritypatent/DE4009773C2/de
Application filed by Buderus Heiztechnik GmbhfiledCriticalBuderus Heiztechnik Gmbh
Priority claimed from EP90124888Aexternal-prioritypatent/EP0444296B1/de
Application grantedgrantedCritical
Publication of ATE90441T1publicationCriticalpatent/ATE90441T1/de