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发明名称
DISPOSITIVO DE VALVULA
摘要
申请公布号
PT94767(B)
申请公布日期
1997.10.31
申请号
PT19900094767
申请日期
1990.07.19
申请人
POLYPIPE PLC.,
发明人
KEVIN MCDONALD;MICHAEL HARRY HARDY
分类号
E03C1/122;F16K24/06;(IPC1-7):E03C1/122
主分类号
E03C1/122
代理机构
代理人
主权项
地址
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