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经营范围
发明名称
Improvements in or relating to valves
摘要
申请公布号
GB415072(A)
申请公布日期
1934.08.14
申请号
GB19330004488
申请日期
1933.02.14
申请人
HAROLD LYALL MASON
发明人
分类号
F16K47/02
主分类号
F16K47/02
代理机构
代理人
主权项
地址
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