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发明名称
VALVE
摘要
申请公布号
CA455247(A)
申请公布日期
1949.03.22
申请号
CAD455247
申请日期
申请人
ALEXANDER CHARLES ELLIS;WALTER DOUGLAS
发明人
WALTER DOUGLAS;ALEXANDER CHARLES ELLIS
分类号
主分类号
代理机构
代理人
主权项
地址
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