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发明名称
摘要
申请公布号	FR2269177(B1)	申请公布日期	1979.05.25
申请号	FR19750012690	申请日期	1975.04.23
申请人	NGK INSULATORS LTD	发明人
分类号	G21F7/06;G21F9/02;(IPC1-7):G21F9/02	主分类号	G21F7/06
代理机构		代理人
主权项
地址

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