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经营范围
发明名称
Improvements in and relating to pressure reducing valves
摘要
申请公布号
GB551563(A)
申请公布日期
1943.03.01
申请号
GB19410013558
申请日期
1941.10.22
申请人
DAVID AULD & SONS LIMITED;JOHN GRAHAM;DAVID AULD GRAHAM
发明人
分类号
G05D16/06
主分类号
G05D16/06
代理机构
代理人
主权项
地址
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