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经营范围
发明名称
Improvements relating to valves and operating means therefor
摘要
申请公布号
GB615459(A)
申请公布日期
1949.01.06
申请号
GB19460007647
申请日期
1946.03.12
申请人
THE PROSPERITY COMPANY INC.
发明人
分类号
F16K31/126
主分类号
F16K31/126
代理机构
代理人
主权项
地址
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