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发明名称
Spark plug
摘要
申请公布号
US1814997(A)
申请公布日期
1931.07.14
申请号
US19280266776
申请日期
1928.04.02
申请人
WITTNER EDWARD F
发明人
WITTNER EDWARD F.
分类号
H01T13/06
主分类号
H01T13/06
代理机构
代理人
主权项
地址
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