E21D5/10 - CPC Classification Index

ClassID:

135961 ⎘

E21D5/10 - CPC Classification

Classification description:

Lining shafts; Linings therefor with iron or steel in the form of tubbing or of rings composed of profile elements

Recent Application in this class:

20220018250

Anti-seismic support method for mine shaft

20170016326

Fastener and method of sealing passage

20120213590

Mine shaft liner plate system and method

20110188939

MINE SHAFT LINER PLATE SYSTEM AND METHOD