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发明名称
Gate valve
摘要
申请公布号
US2876986(A)
申请公布日期
1959.03.10
申请号
US19560605869
申请日期
1956.08.23
申请人
HYDRIL COMPANY
发明人
KNOX GRANVILLE S.
分类号
F16K3/18
主分类号
F16K3/18
代理机构
代理人
主权项
地址
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