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发明名称
Improvements in or relating to methods of making poppet valves, and the improved valves resulting therefrom
摘要
申请公布号
GB604290(A)
申请公布日期
1948.07.01
申请号
GB19450007268
申请日期
1945.03.22
申请人
THOMPSON PRODUCTS, INC.
发明人
分类号
B23P13/00
主分类号
B23P13/00
代理机构
代理人
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