by means of granular material

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CPC
E21D15/303

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

Current Industry

E21D15/303by means of granular material

Industries

Patents Grantslast 30 patents

Information Patent Grant
Mine roof support, pre-installation assembly for same, and method o...
- Patent number 10,822,948
- Issue date Nov 3, 2020
- Burrell Mining Products, Inc.
- Don C. Abel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Load support drum with resilient core member
- Patent number 10,774,641
- Issue date Sep 15, 2020
- Micon
- David A. Hussey
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MINE ROOF SUPPORT, PRE-INSTALLATION ASSEMBLY FOR SAME, AND METHOD O...
- Publication number 20190203597
- Publication date Jul 4, 2019
- BURRELL MINING PRODUCTS, INC.
- Don C. Abel
- E21 - EARTH DRILLING MINING