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经营范围
发明名称
Improvements in and relating to pressure regulating valves
摘要
申请公布号
GB506726(A)
申请公布日期
1939.05.30
申请号
GB19370026463
申请日期
1937.09.30
申请人
SYDNEY OLDFIELD
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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