David T. Hanns

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Belmont, New South Wales, AU

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Patents Grantslast 30 patents

Information Patent Grant
Tri cone drill bit
- Patent number 10,323,461
- Issue date Jun 18, 2019
- David Hanns
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sub-assembly for dust suppression in rock drilling
- Patent number 5,490,571
- Issue date Feb 13, 1996
- Carrall; Christopher Richard
- David T. Hanns
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILL BIT
- Publication number 20160123084
- Publication date May 5, 2016
- David Hanns
- E21 - EARTH DRILLING MINING