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Priority claimed from US06/176,175external-prioritypatent/US4309552A/en
Application filed by Robins Co Inc A HfiledCriticalRobins Co Inc A H
Priority to AT89584ApriorityCriticalpatent/AT383595B/de
Publication of ATA89584ApublicationCriticalpatent/ATA89584A/de
Application grantedgrantedCritical
Publication of AT383595BpublicationCriticalpatent/AT383595B/de