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发明名称
Check-valve
摘要
申请公布号
GB988838(A)
申请公布日期
1965.04.14
申请号
GB19630031142
申请日期
1963.08.07
申请人
JOHANNES BERNADUS RATELBAND
发明人
分类号
F16K15/14
主分类号
F16K15/14
代理机构
代理人
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