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Priority to JP47119565ApriorityCriticalpatent/JPS517860B2/ja
Publication of JPS4977260ApublicationCriticalpatent/JPS4977260A/ja
Publication of JPS517860B2publicationCriticalpatent/JPS517860B2/ja
Circular perforated flowing oil/water separation tank, separating and disposing of drainage containing water,oil and other substances in controlling uneven tolerance of water level inside tank to a minimum by adjusting a flow