Robert Holdsworth

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Cordeaux Heights NSW, AU

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Patents Grantslast 30 patents

Information Patent Grant
Electric drilling and bolting device
- Patent number 11,078,790
- Issue date Aug 3, 2021
- Joy Global Underground Mining LLC
- Robert Holdsworth
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ELECTRIC DRILLING AND BOLTING DEVICE
- Publication number 20180010454
- Publication date Jan 11, 2018
- Joy MM Delaware, Inc.
- Robert Holdsworth
- E21 - EARTH DRILLING MINING