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发明名称
Improvements in, or relating to, non-return valves
摘要
申请公布号
GB889528(A)
申请公布日期
1962.02.14
申请号
GB19570006519
申请日期
1957.02.27
申请人
WALKER CROSWELLER & COMPANY LIMITED
发明人
BARKER CLIFFORD LEWIS
分类号
F16K15/02
主分类号
F16K15/02
代理机构
代理人
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