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Priority claimed from JP61208050Aexternal-prioritypatent/JPH0818850B2/ja
Priority claimed from JP62177218Aexternal-prioritypatent/JPH0764771B2/ja
Application filed by Central Glass Co LtdfiledCriticalCentral Glass Co Ltd
Publication of IT8721809A0publicationCriticalpatent/IT8721809A0/it
Application grantedgrantedCritical
Publication of IT1222601BpublicationCriticalpatent/IT1222601B/it