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发明名称
Engine valve of tubular type
摘要
申请公布号
US2674987(A)
申请公布日期
1954.04.13
申请号
US19500191184
申请日期
1950.10.20
申请人
CAMFIELD EMERY L
发明人
CAMFIELD EMERY L.
分类号
F01L7/02
主分类号
F01L7/02
代理机构
代理人
主权项
地址
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