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发明名称
RETENTOR-DRENADOR
摘要
申请公布号
BR8008600(A)
申请公布日期
1982.08.10
申请号
BR19800008600
申请日期
1980.12.30
申请人
ANIBAL CARDOSO FELICIO
发明人
ANIBAL CARDOSO FELICIO
分类号
E21B33/12;F16K41/00;(IPC1-7):E21B33/12
主分类号
E21B33/12
代理机构
代理人
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地址
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