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经营范围
发明名称
ALUMINA PORCELAIN COMPOSITIONS
摘要
申请公布号
EP0190768(A3)
申请公布日期
1986.11.12
申请号
EP19860101624
申请日期
1986.02.07
申请人
NGK SPARK PLUG CO. LTD.
发明人
ANDO, MINATO;ITO, MASAAKI
分类号
C04B35/111;H01B3/12;(IPC1-7):C04B35/10
主分类号
C04B35/111
代理机构
代理人
主权项
地址
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