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Priority claimed from US229207Aexternal-prioritypatent/US3875232A/en
Priority claimed from AT299672Aexternal-prioritypatent/AT316207B/de
Application filed by Diamond Shamrock CorpfiledCriticalDiamond Shamrock Corp
Priority to AT283274ApriorityCriticalpatent/AT330198B/de
Publication of ATA283274ApublicationCriticalpatent/ATA283274A/de
Application grantedgrantedCritical
Publication of AT330198BpublicationCriticalpatent/AT330198B/de