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Priority claimed from JP2173982Uexternal-prioritypatent/JPS58125014U/ja
Priority claimed from JP57024832Aexternal-prioritypatent/JPS58142823A/ja
Application filed by Kureha Chemical Ind Co LtdfiledCriticalKureha Chemical Ind Co Ltd
Publication of IT8319639A0publicationCriticalpatent/IT8319639A0/it
Application grantedgrantedCritical
Publication of IT1209474BpublicationCriticalpatent/IT1209474B/it