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发明名称
Ball valve with built-in check valve
摘要
申请公布号
GB2157809(A)
申请公布日期
1985.10.30
申请号
GB19850009722
申请日期
1985.04.16
申请人
* CALEFFI & C S P A
发明人
CALEFFI * FRANCO
分类号
F16K5/06;F16K15/18;(IPC1-7):F16K5/00
主分类号
F16K5/06
代理机构
代理人
主权项
地址
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