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PCE
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DIFF Subgroup
E21B 19/24

Guiding or centralising devices for drilling rods or pipes

Introduced: January 2000

Full Title

Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables > Guiding or centralising devices for drilling rods or pipes

No child classifications to compare. This is a leaf node in both IPC and CPC.