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发明名称
Sparking plug
摘要
申请公布号
US2150500(A)
申请公布日期
1939.03.14
申请号
US19370134373
申请日期
1937.04.01
申请人
KARL WERTH
发明人
GRAF LEO
分类号
H01T13/46
主分类号
H01T13/46
代理机构
代理人
主权项
地址
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