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经营范围
发明名称
Two way shut off valve
摘要
申请公布号
US3194269(A)
申请公布日期
1965.07.13
申请号
US19620245901
申请日期
1962.12.19
申请人
发明人
WILLIAMS JOHN L.
分类号
F16K3/02
主分类号
F16K3/02
代理机构
代理人
主权项
地址
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