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Drilling tool equipped with improved cutting element layout...

E - Fixed Constructions – 21 – B
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Drilling tool for down-the-hole drilling, reamer means and...

E - Fixed Constructions – 21 – B
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Drilling tool for percussive and rotary drilling

E - Fixed Constructions – 21 – B
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Drilling tool for sinking wells in underground rock formations

E - Fixed Constructions – 21 – B
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Drilling tool including a drill and a receiving part

E - Fixed Constructions – 21 – B
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Drilling tool with expandable elements

E - Fixed Constructions – 21 – B
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Drilling tool with feed control

E - Fixed Constructions – 21 – B
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Drilling tool with fluid cleaner

E - Fixed Constructions – 21 – B
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Drilling tool with irrigation system using a fluid...

E - Fixed Constructions – 21 – B
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Drilling tool with non rotating sleeve

E - Fixed Constructions – 21 – B
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Drilling tool with retractable pilot drilling unit

E - Fixed Constructions – 21 – B
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Drilling tool with rotary conical cutting wheels

E - Fixed Constructions – 21 – B
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Drilling tool with shock dampers

E - Fixed Constructions – 21 – B
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Drilling turbine

E - Fixed Constructions – 21 – B
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Drilling turbine

E - Fixed Constructions – 21 – B
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Drilling unit

E - Fixed Constructions – 21 – B
Patent

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Drilling unit

E - Fixed Constructions – 21 – B
Patent

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Drilling unit, method for slot drilling and slotting device

E - Fixed Constructions – 21 – B
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Drilling wellbores with optimal physical drill string...

E - Fixed Constructions – 21 – B
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Drilling wells in compartmentalized reservoirs

E - Fixed Constructions – 21 – B
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