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发明名称
Poppet valve blank and method of making same
摘要
申请公布号
US2193088(A)
申请公布日期
1940.03.12
申请号
US19380190220
申请日期
1938.02.12
申请人
EATON MANUFACTURING COMPANY
发明人
CHARLTON GEORGE
分类号
B23P15/00;F01L3/02
主分类号
B23P15/00
代理机构
代理人
主权项
地址
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