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Publication date
Priority claimed from US229207Aexternal-prioritypatent/US3875232A/en
Priority claimed from AT299672Aexternal-prioritypatent/AT316207B/en
Application filed by Diamond Shamrock CorpfiledCriticalDiamond Shamrock Corp
Priority to AT678173ApriorityCriticalpatent/AT330197B/en
Publication of ATA678173ApublicationCriticalpatent/ATA678173A/en
Application grantedgrantedCritical
Publication of AT330197BpublicationCriticalpatent/AT330197B/en