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发明名称
VALVULA REDUTORA DA PRESSAO DE FLUIDOS DE DUPLA SEGURANCA
摘要
申请公布号
PT7204(U)
申请公布日期
1983.07.27
申请号
PT19810007204U
申请日期
1981.02.18
申请人
MARIO G. RIBEIRO & COSTA, LDA.
发明人
分类号
F16K17/34;(IPC1-7):F16K17/34
主分类号
F16K17/34
代理机构
代理人
主权项
地址
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