E21C7/00 - CPC Classification Index

ClassID:

135759 ⎘

E21C7/00 - CPC Classification

Classification description:

Sub-classes:

E21C7/04 » using exhaust air from the drill motor for blowing-off the dust 0
E21C7/08 » by liquids 3
E21C7/12 » Preventing exhaust air from the drill motor from blowing-off towards the working face 0

Recent Application in this class:

20150176345

Drilling tool support and method of collaring

20150034392

Dust collection system for a machine

20140265523

Aerated rock dust