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
Child Classifications
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- E21B 19/07 Slip-type elevators