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GB9911920D0
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Rotary drill bits
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GB9901874D0
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A method of predicting characteristics of a rotary drag-type drill bit design
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GB9826723D0
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A method of determining characteristics of a rotary drag-type drill bit
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GB9816825D0
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A method of determining characteristics of a rotary drag-type drill bit
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GB9815843D0
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Improvements in or relating to rotary drill bits
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GB9815125D0
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A method of determining characteristics of a rotary drag-type drill bit
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GB0116223D0
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Improvements in or relating to rotary drill bits
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GB0113284D0
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Improvements in or relating to rotary drill bits
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GB9803007D0
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Improvements in or relating to elements faced with superhard material
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GB9722887D0
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Methods of manufacturing rotary drill bits
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GB9715771D0
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Improvements in or relating to the manufacture of elements faced with superhard material
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