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发明名称
VALVULA ANTI-RETORNO
摘要
申请公布号
BR7000413(U)
申请公布日期
1991.10.08
申请号
BR1990MU00413U
申请日期
1990.03.02
申请人
FRANCISCO JOAQUIM DIAS
发明人
FRANCISCO JOAQUIM DIAS
分类号
E03C1/298;(IPC1-7):E03C1/298
主分类号
E03C1/298
代理机构
代理人
主权项
地址
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