E21D11/30 - CPC Classification Index

ClassID:

136060 ⎘

E21D11/30 - CPC Classification

Classification description:

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings , e.g. by assembling; Lining predominantly with metal Bases for lower arch members

Recent Application in this class:

20170096896

2017-04-06

RIB FOR SUPPORTING AND CONSOLIDATING AN EXCAVATION AND METHOD FOR INSTALLING A STRUCTURE TO SUPPORT AND CONSOLIDATE AN EXCAVATION

20120301223

2012-11-29

Rib for supporting and reinforcing an excavation