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发明名称
Valve
摘要
申请公布号
US2989075(A)
申请公布日期
1961.06.20
申请号
US19570636314
申请日期
1957.01.25
申请人
DERRICK JOHNSTON WILLIAM
发明人
JOHNSTON WILLIAM DERRICK
分类号
F16K27/02
主分类号
F16K27/02
代理机构
代理人
主权项
地址
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