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发明名称
Engine valve
摘要
申请公布号
US1750975(A)
申请公布日期
1930.03.18
申请号
US19280285831
申请日期
1928.06.16
申请人
STIEH JR WILLIAM M
发明人
JR. WILLIAM M. STIEH,
分类号
F01L3/16
主分类号
F01L3/16
代理机构
代理人
主权项
地址
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