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Priority to JP18207984UpriorityCriticalpatent/JPH0236095Y2/ja
Publication of JPS6196331UpublicationCriticalpatent/JPS6196331U/ja
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Dispositivo per chiudere a tenuta la fessura anulare fra la parete ed il tetto galleggiante dei serbatoi di grandi dimensioni per idrocarbu ri liquidi o simili