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发明名称
Valve
摘要
申请公布号
US1777647(A)
申请公布日期
1930.10.07
申请号
US19280275062
申请日期
1928.05.04
申请人
MARCHAL JOSEPH P
发明人
MARCHAL JOSEPH P.
分类号
F16K15/08
主分类号
F16K15/08
代理机构
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