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发明名称
Spark plug and method of producing spark plug
摘要
申请公布号
EP1237244(A3)
申请公布日期
2006.05.17
申请号
EP20020003904
申请日期
2002.02.21
申请人
NGK SPARK PLUG CO., LTD.
发明人
SUGIYAMA, YOSHIHISA;SUZUKI, TOMOHARU;KUMAGAI, KENICHI
分类号
C22C19/03;H01T13/39;H01T13/20;H01T21/02
主分类号
C22C19/03
代理机构
代理人
主权项
地址
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