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CPC Subgroup
E21B 19/06

Elevators, i.e. rod- or tube-gripping devices

Full Title

Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables > Rod or cable suspensions > Elevators, i.e. rod- or tube-gripping devices

1 direct subcode

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