GB0009834D0
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Expandable bit
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GB0003542D0
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Oilfield type drill bit with rotatable gauge section
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GB9902736D0
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Oilfield type drill bit with rotatable gauge section
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GB9901992D0
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Apparatus and method for mitigating wear in downhole tools
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GB9814597D0
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A drilling tool
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GB9812554D0
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A drilling tool
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GB9810596D0
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Shaped stud cutter
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GB9802480D0
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Oilfield type drill bit with rotatable gauge section
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GB9722724D0
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Improvements relating to subsea drilling of boreholes
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GB9703183D0
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Oilfield type drill bit with rotatable gauge section
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GB9504968D0
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Improved casing shoe
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GB9103828D0
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Improvements relating to drill bits
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