发明名称 SPARK PLUG
摘要 A spark plug having a metallic shell covered with a nickel plating layer and having a groove portion formed between a tool engagement portion and a gas seal portion and having an orthogonal-to-axis sectional area of 36 mm2 or less.
申请公布号 US2013154468(A1) 申请公布日期 2013.06.20
申请号 US201113818719 申请日期 2011.04.12
申请人 NASU HIROAKI;SUGITA MAKOTO;SATO AKITO;KUWAHARA SHINGO 发明人 NASU HIROAKI;SUGITA MAKOTO;SATO AKITO;KUWAHARA SHINGO
分类号 H01T13/39 主分类号 H01T13/39
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