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发明名称
Spark plug
摘要
申请公布号
US2174978(A)
申请公布日期
1939.10.03
申请号
US19380234850
申请日期
1938.10.13
申请人
HART WILLARD M
发明人
HART WILLARD M.
分类号
H01T13/32
主分类号
H01T13/32
代理机构
代理人
主权项
地址
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