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发明名称
Improvements in or relating to shut-off valves
摘要
申请公布号
GB742703(A)
申请公布日期
1956.01.04
申请号
GB19520009819
申请日期
1952.04.18
申请人
WILHELM BECK
发明人
分类号
F16K3/02
主分类号
F16K3/02
代理机构
代理人
主权项
地址
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