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经营范围
发明名称
Magnet-assisted diaphragm-valve
摘要
申请公布号
US2972465(A)
申请公布日期
1961.02.21
申请号
US19590814347
申请日期
1959.05.19
申请人
GENERAL CONTROLS CO.
发明人
RAY WILLIAM A.
分类号
F16K31/40
主分类号
F16K31/40
代理机构
代理人
主权项
地址
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