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Priority claimed from US05/857,553external-prioritypatent/US4151122A/en
Application filed by Phillips Petroleum CofiledCriticalPhillips Petroleum Co
Priority to AT230082ApriorityCriticalpatent/AT380888B/de
Publication of ATA230082ApublicationCriticalpatent/ATA230082A/de
Application grantedgrantedCritical
Publication of AT380888BpublicationCriticalpatent/AT380888B/de