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Priority claimed from DE19772740004external-prioritypatent/DE2740004C3/de
Application filed by Stewing AlbertfiledCriticalStewing Albert
Publication of ATA379983ApublicationCriticalpatent/ATA379983A/de
Application grantedgrantedCritical
Publication of AT383912BpublicationCriticalpatent/AT383912B/de