DIFF Subgroup
E21B 19/07 Slip-type elevators
Introduced: September 1968
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 > Slip-type elevators
No child classifications to compare. This is a leaf node in both IPC and CPC.