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经营范围
发明名称
Improvements in or relating to air vent valves for water mains
摘要
申请公布号
GB690286(A)
申请公布日期
1953.04.15
申请号
GB19500014038
申请日期
1950.06.06
申请人
J. BLAKEBOROUGH & SONS, LIMITED
发明人
KLOUMAN FREDERICK AUGUST
分类号
F16K24/00
主分类号
F16K24/00
代理机构
代理人
主权项
地址
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