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发明名称
Improvements in or relating to self-closing piston valves
摘要
申请公布号
GB464598(A)
申请公布日期
1937.04.21
申请号
GB19360008331
申请日期
1936.03.20
申请人
OWEN BROGAN
发明人
分类号
F16K11/065;F16K21/04
主分类号
F16K11/065
代理机构
代理人
主权项
地址
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