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Priority claimed from DE2328506Aexternal-prioritypatent/DE2328506C3/en
Application filed by Kumepa Patent Gmbh EtsfiledCriticalKumepa Patent Gmbh Ets
Publication of ATA618073ApublicationCriticalpatent/ATA618073A/en
Application grantedgrantedCritical
Publication of AT332032BpublicationCriticalpatent/AT332032B/en