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发明名称
Check valve
摘要
申请公布号
US2576810(A)
申请公布日期
1951.11.27
申请号
US19500173579
申请日期
1950.07.13
申请人
RATELBAND JOHANNES B
发明人
RATELBAND JOHANNES B.
分类号
F16K15/14
主分类号
F16K15/14
代理机构
代理人
主权项
地址
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