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发明名称
Spark plug
摘要
申请公布号
US2470568(A)
申请公布日期
1949.05.17
申请号
US19460660065
申请日期
1946.04.06
申请人
DOUGLAS AIRCRAFT COMPANY, INC.
发明人
MCCRUMM JOHN D.
分类号
H01T13/36
主分类号
H01T13/36
代理机构
代理人
主权项
地址
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