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发明名称
Improvements in spark plugs
摘要
申请公布号
GB332482(A)
申请公布日期
1930.07.24
申请号
GB19290032225
申请日期
1929.10.23
申请人
AC SPARK PLUG COMPANY
发明人
分类号
H01T21/02
主分类号
H01T21/02
代理机构
代理人
主权项
地址
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