characterised by the material

Follow

Industry

CPC
E21D17/006

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D17/00Caps for supporting mine roofs

Current Industry

E21D17/006characterised by the material

Industries

Patents Grantslast 30 patents

Information Patent Grant
3217498
- Patent number 3,217,498
- Issue date Nov 16, 1965
- E21 - EARTH DRILLING MINING
Information Patent Grant
3216168
- Patent number 3,216,168
- Issue date Nov 9, 1965
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
KNOTTED MESH AS SUPPORTING MATERIAL IN MINES
- Publication number 20150104261
- Publication date Apr 16, 2015
- MINOVA INTERNATIONAL LIMITED
- David Aspinwall
- E21 - EARTH DRILLING MINING
Information Patent Application
ENGINEERED METAL CRIB FOR USE AS A SUPPORT STRUCTURE
- Publication number 20110250023
- Publication date Oct 13, 2011
- BOARD OF TRUSTEES OF SOUTHERN ILLINOIS UNIVERSITY
- Yoginder P. Chugh
- E21 - EARTH DRILLING MINING