E21D23/08 - CPC Classification Index

ClassID:

136225 ⎘

E21D23/08 - CPC Classification

Classification description:

Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor Advancing mechanisms

Sub-classes:

E21D23/081 » {forming parts of the roof supports} 1
E21D23/10 » with advancing devices separate from the supporting construction 2

Recent Application in this class:

20170306756

2017-10-26

Cutting apparatus

20170298731

2017-10-19

Device for the installation of rock bolts and cutting apparatus

20170298730

2017-10-19

Cutting apparatus

20150086272

2015-03-26

Self-moving tunnel support canopy

20120180467

2012-07-19

ADVANCING ASSEMBLY AND POWERED SHIELD SUPPORT HEREWITH