DIFF Subgroup
E21B 11/06 with driven cutting chains or similarly driven tools
Introduced: September 1968
Title
Titles differ between systems:
IPC: with driven cutting chains or similarly-driven tools
CPC: with driven cutting chains or similarly driven tools
Full Title
Full titles differ between systems:
IPC:
Other drilling tools > with driven cutting chains or similarly-driven tools
CPC:
Other drilling tools > with driven cutting chains or similarly driven tools
No child classifications to compare. This is a leaf node in both IPC and CPC.