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发明名称
Improved valves for internal combustion engines and methods of making the same
摘要
申请公布号
GB563071(A)
申请公布日期
1944.07.27
申请号
GB19430006042
申请日期
1943.04.15
申请人
GENERAL MOTORS CORPORATION
发明人
分类号
F01L3/04
主分类号
F01L3/04
代理机构
代理人
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