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Priority claimed from AT219470Aexternal-prioritypatent/AT309613B/de
Application filed by Othmer Donald FfiledCriticalOthmer Donald F
Priority to AT108772ApriorityCriticalpatent/AT332950B/de
Publication of ATA108772ApublicationCriticalpatent/ATA108772A/de
Application grantedgrantedCritical
Publication of AT332950BpublicationCriticalpatent/AT332950B/de