IPC Subgroup
E21B 1/36 Tool-carrier piston type, i.e. in which the tool is connected to an impulse member
Introduced: January 2000
Last revised: January 2006
Full Title
Percussion drilling > Tool-carrier piston type, i.e. in which the tool is connected to an impulse member
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS