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发明名称
APERFEICOAMENTOS EM TUBOS OU MANGOTES PROPRIOS PARA VALVULAS DE PASSAGEM DE LIQUIDOS,ESPECIALMENTE LIQUIDOS CORROSIVOS
摘要
申请公布号
BR7504258(A)
申请公布日期
1977.02.23
申请号
5449/75
申请日期
1975.07.04
申请人
VALLO G
发明人
VALLO G
分类号
F16L11/04;(IPC1-7):F16L11/04
主分类号
F16L11/04
代理机构
代理人
主权项
地址
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