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发明名称
HERRAMIENTA ACCIONADA HIDRAULICAMENTE PARA BAJAR COLGADORES DE CANOS DE ENTUBACION
摘要
申请公布号
AR210929(A1)
申请公布日期
1977.09.30
申请号
AR19770266215
申请日期
1977.01.17
申请人
FMC CORP.
发明人
分类号
E21B23/04;E21B33/043;(IPC1-7):E21B/;E21C/
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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