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

Scott D. Mcdonough

E - Fixed Constructions – 21 – B

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Inventor

Country: United States Of America

Arrangement of roller cone inserts

E - Fixed Constructions – 21 – B
Patent

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Bowed out chisel insert for rock bits

E - Fixed Constructions – 21 – B
Patent

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Cutter element adapted to withstand tensile stress

E - Fixed Constructions – 21 – B
Patent

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Drill bit cutting elements with selectively positioned wear...

E - Fixed Constructions – 21 – B
Patent

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Drill bit with canted gage insert

E - Fixed Constructions – 21 – B
Patent

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Hardfaced mill tooth rotary cone rock bit

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1374061

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