E21B 19/002 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

E21B 19/002

Full Title

Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.