James Seddon

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Heskin, GB

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Patents Grantslast 30 patents

Information Patent Grant
Mine roof supports
- Patent number 4,563,111
- Issue date Jan 7, 1986
- Dobson Park Industries PLC.
- James Seddon
- E21 - EARTH DRILLING MINING
Information Patent Grant
Self-advancing mine roof supports
- Patent number 4,505,517
- Issue date Mar 19, 1985
- Dobson Park Industries PLC.
- James Seddon
- E21 - EARTH DRILLING MINING