John Nicholas De La Vergne

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North Bay, CA

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Patents Grantslast 30 patents

Information Patent Grant
Forming a shaft for an underground mine
- Patent number 8,591,151
- Issue date Nov 26, 2013
- Technological Resouces Pty. Ltd.
- Rocky Lynn Webb
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
FORMING A SHAFT FOR AN UNDERGROUND MINE
- Publication number 20120318581
- Publication date Dec 20, 2012
- Rocky Lynn Webb
- E21 - EARTH DRILLING MINING