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发明名称
POPPET VALVE
摘要
申请公布号
CA385395(A)
申请公布日期
1939.12.05
申请号
CAD385395
申请日期
申请人
JOHN JOSEPH DEWEY;GEORGE WARREN DOUGLAS
发明人
GEORGE WARREN DOUGLAS;JOHN JOSEPH DEWEY
分类号
主分类号
代理机构
代理人
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