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发明名称
Improvements in the manufacture of composite metallic poppet valves
摘要
申请公布号
GB593709(A)
申请公布日期
1947.10.23
申请号
GB19450006869
申请日期
1945.03.19
申请人
EATON MANUFACTURING COMPANY
发明人
分类号
B21K1/22;B23P13/00
主分类号
B21K1/22
代理机构
代理人
主权项
地址
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