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Priority claimed from FR7917385Aexternal-prioritypatent/FR2460368A1/en
Priority claimed from FR7921884Aexternal-prioritypatent/FR2464336A2/en
Application filed by Sea Tank CofiledCriticalSea Tank Co
Publication of MX150038ApublicationCriticalpatent/MX150038A/en
Offshore petroleum mining structure for installation on poor ground - incorporates vertical plates fitted underneath concrete base and of height comparable to thickness of poor ground layer