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Priority claimed from US06/446,503external-prioritypatent/US4492004A/en
Application filed by Oetiker Hans MaschinenfiledCriticalOetiker Hans Maschinen
Priority to AT73787ApriorityCriticalpatent/AT396003B/de
Publication of ATA73787ApublicationCriticalpatent/ATA73787A/de
Application grantedgrantedCritical
Publication of AT396003BpublicationCriticalpatent/AT396003B/de