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经营范围
发明名称
Engine valve means and porting
摘要
申请公布号
USRE30425(E)
申请公布日期
1980.11.04
申请号
US19790078499
申请日期
1979.09.24
申请人
发明人
分类号
F02B33/04;F02B33/30;F02B75/02
主分类号
F02B33/04
代理机构
代理人
主权项
地址
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