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经营范围
发明名称
Improvements in diaphragm gate valves
摘要
申请公布号
GB853357(A)
申请公布日期
1960.11.02
申请号
GB19580000215
申请日期
1958.01.02
申请人
JACOB SMIT
发明人
分类号
F16K7/12
主分类号
F16K7/12
代理机构
代理人
主权项
地址
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