David W. Evans

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Wallsend, AU

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Patents Grantslast 30 patents

Information Patent Grant
Encapsulation system and method of installing a rock bolt
- Patent number 11,236,613
- Issue date Feb 1, 2022
- Dywidag-Systems International Pty Limited
- David William Evans
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Friction bolt assembly
- Patent number 10,066,483
- Issue date Sep 4, 2018
- DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
- David William Evans
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
ENCAPSULATION SYSTEM AND METHOD OF INSTALLING A ROCK BOLT
- Publication number 20200300089
- Publication date Sep 24, 2020
- DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
- David William EVANS
- E21 - EARTH DRILLING MINING
Information Patent Application
FRICTION BOLT ASSEMBLY
- Publication number 20160186564
- Publication date Jun 30, 2016
- DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
- David William EVANS
- E21 - EARTH DRILLING MINING
Information Patent Application
Method of Assessing a Multilayer Strata for Rock Bolt Installation
- Publication number 20110002746
- Publication date Jan 6, 2011
- DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
- David W. Evans
- E21 - EARTH DRILLING MINING