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Priority claimed from US00254015Aexternal-prioritypatent/US3812035A/en
Application filed by Continental Oil CofiledCriticalContinental Oil Co
Publication of DK136659BpublicationCriticalpatent/DK136659B/da
Application grantedgrantedCritical
Publication of DK136659CpublicationCriticalpatent/DK136659C/da