Eric Dring

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Pleasley, GB

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Patents Grantslast 30 patents

Information Patent Grant
Equipment for laying a layer of elongate material
- Patent number 4,230,371
- Issue date Oct 28, 1980
- Coal Industry Limited
- Roy L. Bell
- E21 - EARTH DRILLING MINING
Information Patent Grant
Equipment for laying elongate material
- Patent number 4,196,935
- Issue date Apr 8, 1980
- Coal Industry (Patents) Limited
- Eric Dring
- E21 - EARTH DRILLING MINING