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发明名称
Valve
摘要
申请公布号
US2212733(A)
申请公布日期
1940.08.27
申请号
US19370178889
申请日期
1937.12.09
申请人
GRIGSBY GAIL G
发明人
GRIGSBY GAIL G.
分类号
F16K7/06
主分类号
F16K7/06
代理机构
代理人
主权项
地址
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