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Priority claimed from DE8111976Uexternal-prioritypatent/DE8111976U1/de
Priority claimed from DE19823208890external-prioritypatent/DE3208890A1/de
Application filed by Pct Pyrochemtek Ag, Rockwool Ab, Gruenau Gmbh Chem FabfiledCriticalPct Pyrochemtek Ag
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Publication of ATE16062T1publicationCriticalpatent/ATE16062T1/de