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PRODUKTIESAMENSTEL VOOR EEN ONDER WATER GELEGEN BOORPUTKOP.

申请公布号:NL154298(B)

申请号:NL19720015424

申请日期:1972.11.15

申请公布日期:1977.08.15

申请人:
SUBSEA EQUIPMENT ASSOCIATES LIMITED, HAMILTON, BERMUDA-EILANDEN.

分类号:E21B33/035;E21B33/038;E21B33/047;E21B41/04;E21B43/01;(IPC1-7):E21B33/03

主分类号:E21B33/035

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