James A. Sutton

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Cheltenham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Mine roof support
- Patent number 4,132,081
- Issue date Jan 2, 1979
- Dowty Mining Equipment Limited
- John H. Walker
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof support
- Patent number 4,126,002
- Issue date Nov 21, 1978
- Dowty Mining Equipment Limited
- John H. Walker
- E21 - EARTH DRILLING MINING