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发明名称
Method of forming valve guides
摘要
申请公布号
US2632235(A)
申请公布日期
1953.03.24
申请号
US19470775240
申请日期
1947.09.20
申请人
CATERPILLAR TRACTOR CO.
发明人
DOYLE WILLIAM L. H.;RIEGEL GLEN C.
分类号
B21K1/24
主分类号
B21K1/24
代理机构
代理人
主权项
地址
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