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UN METODO PARA LA CONEXION DE CONDUCTOS EN POZOS SUBTERRA- NEOS TALADRADOS.

申请公布号:ES347351(A3)

申请号:ES19510003473

申请日期:1967.11.18

申请公布日期:1969.11.01

申请人:
CONTINENTAL OIL COMPANY

分类号:E21D;(IPC1-7):E21D/

主分类号:E21D

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