E21F15/10 - CPC Classification Index

ClassID:

136307 ⎘

E21F15/10 - CPC Classification

Classification description:

Methods or devices for placing filling-up materials in underground workings; Filling-up hydraulically or pneumatically Hydraulic or pneumatic filling-up machines

Recent Application in this class:

20230243330

2023-08-03

Systems and methods for subterranean energy storage

20190017381

2019-01-17

METHOD AND APPARATUS FOR PASTE BACKFILL

20090252881

2009-10-08

Method of spray application, and spray apparatus, for bentonite material

20080152432

2008-06-26

System and method for aggregate disposal

20070228804

2007-10-04

Remote mine seal spray nozzle assembly, system and methods of use

17401337

2022-05-03

Monitoring device for deformation of locked patch crack of rock slope and arrangement method