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发明名称
Improvements relating to non-return valves
摘要
申请公布号
GB459619(A)
申请公布日期
1937.01.12
申请号
GB19360001906
申请日期
1936.01.21
申请人
HOPKINSONS LIMITED;RICHARD LESLIE BROWN
发明人
分类号
F16K15/03
主分类号
F16K15/03
代理机构
代理人
主权项
地址
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