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发明名称
Valve
摘要
申请公布号
US2693201(A)
申请公布日期
1954.11.02
申请号
US19500179133
申请日期
1950.08.14
申请人
PAGE JOHN S
发明人
PAGE JOHN S.
分类号
F16K21/04
主分类号
F16K21/04
代理机构
代理人
主权项
地址
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