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Priority claimed from DE19712116986external-prioritypatent/DE2116986A1/de
Priority claimed from AT294972Aexternal-prioritypatent/AT329431B/de
Application filed by Dyckerhoff Zementwerke AgfiledCriticalDyckerhoff Zementwerke Ag
Priority to AT843974ApriorityCriticalpatent/AT345715B/de
Publication of ATA843974ApublicationCriticalpatent/ATA843974A/de
Application grantedgrantedCritical
Publication of AT345715BpublicationCriticalpatent/AT345715B/de