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发明名称
摘要
申请公布号	JPH0476946(B2)	申请公布日期	1992.12.07
申请号	JP19900006869	申请日期	1990.01.16
申请人	NGK INSULATORS LTD	发明人	NISHIMOTO SHUJI
分类号	C04B33/30;H01B19/00	主分类号	C04B33/30
代理机构		代理人
主权项
地址

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