4. E - Fixed Constructions
  5. 21
  6. B

Thomas Walter Oldham

E - Fixed Constructions – 21 – B

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Country: United States Of America

Drill bit having diamond impregnated inserts primary cutting...

E - Fixed Constructions – 21 – B
Patent

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Drill bit having diamond impregnated inserts primary cutting...

E - Fixed Constructions – 21 – B
Patent

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Drill bit having diamond impregnated inserts primary cutting...

E - Fixed Constructions – 21 – B
Patent

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Hard facing for milled tooth rock bits

E - Fixed Constructions – 21 – B
Patent

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High-strength, high-toughness matrix bit bodies

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1244959

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