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经营范围
发明名称
Gate valve
摘要
申请公布号
US2861771(A)
申请公布日期
1958.11.25
申请号
US19540411967
申请日期
1954.02.23
申请人
WALWORTH COMPANY
发明人
BRYANT AUSTIN U.
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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