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APPARAT FOR PAAFOERING AV MAGNETISKE MARKERINGER PAA EN LINE ELLER KABEL

申请公布号:NO146760(B)

申请号:NO19770003515

申请日期:1977.10.13

申请公布日期:1982.08.23

申请人:
SCHLUMBERGER LTD,

发明人:MOULIN, PIERRE A.,

分类号:G01B7/00;E21B47/04;G01B7/04;G01C13/00;H01B13/34;H01F13/00;(IPC1-7):H01F13/00

主分类号:G01B7/00

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