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Priority claimed from JP18857686Aexternal-prioritypatent/JPH0713043B2/en
Priority claimed from JP10657187Aexternal-prioritypatent/JPS63270644A/en
Application filed by Central Glass Co LtdfiledCriticalCentral Glass Co Ltd
Publication of IT8721652A0publicationCriticalpatent/IT8721652A0/en
Application grantedgrantedCritical
Publication of IT1228930BpublicationCriticalpatent/IT1228930B/en