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经营范围
发明名称
Packingless in-line valve
摘要
申请公布号
US3322138(A)
申请公布日期
1967.05.30
申请号
US19640371528
申请日期
1964.06.01
申请人
BACKMAN WILLIAM O
发明人
BACKMAN WILLIAM O.
分类号
F16K1/12
主分类号
F16K1/12
代理机构
代理人
主权项
地址
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