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经营范围
发明名称
COBERTURA REPERFURAVEL
摘要
申请公布号
BR8401198(A)
申请公布日期
1984.10.23
申请号
BR1984PI01198
申请日期
1984.03.15
申请人
METALURGICA INDUSTRIAL MECANICA S.A.
发明人
JUAN CARLOS KRISTIANSEN
分类号
E21B23/06;E21B33/12;E21B33/129;(IPC1-7):E21B33/04
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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