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经营范围
发明名称
Nonreturn valve
摘要
申请公布号
US1902577(A)
申请公布日期
1933.03.21
申请号
US19310518160
申请日期
1931.02.25
申请人
FREDERICK OAKLEY EDWARD CHARLE
发明人
OAKLEY EDWARD CHARLES FREDERICK
分类号
F16K15/06
主分类号
F16K15/06
代理机构
代理人
主权项
地址
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