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Priority claimed from JP17637495Aexternal-prioritypatent/JPH0925390A/en
Priority claimed from JP17637395Aexternal-prioritypatent/JP3290854B2/en
Application filed by Sumitomo Bakelite CofiledCriticalSumitomo Bakelite Co
Publication of SG49966A1publicationCriticalpatent/SG49966A1/en