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发明名称
Check valves
摘要
申请公布号
US2966925(A)
申请公布日期
1961.01.03
申请号
US19580729589
申请日期
1958.04.21
申请人
SPENCE WILLIAM G
发明人
SPENCE WILLIAM G.
分类号
F16K15/08
主分类号
F16K15/08
代理机构
代理人
主权项
地址
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