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Priority claimed from JP4250947Aexternal-prioritypatent/JP2793449B2/ja
Priority claimed from JP25094992Aexternal-prioritypatent/JP3235799B2/ja
Priority claimed from JP04256005Aexternal-prioritypatent/JP3093050B2/ja
Application filed by Sumitomo Bakelite CofiledCriticalSumitomo Bakelite Co
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Publication of TW272981BpublicationCriticalpatent/TW272981B/zh