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Priority claimed from DE19722247833external-prioritypatent/DE2247833C2/en
Application filed by Wasagchemie AgfiledCriticalWasagchemie Ag
Priority to AT345975ApriorityCriticalpatent/AT338882B/en
Publication of ATA345975ApublicationCriticalpatent/ATA345975A/en
Application grantedgrantedCritical
Publication of AT338882BpublicationCriticalpatent/AT338882B/en