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发明名称
Spark plug
摘要
申请公布号
US2159791(A)
申请公布日期
1939.05.23
申请号
US19370137939
申请日期
1937.04.20
申请人
P. R. MALLORY & CO., INC.
发明人
FRUTH HAL F.
分类号
H01T13/39
主分类号
H01T13/39
代理机构
代理人
主权项
地址
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