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

Herbert C. Dill

E - Fixed Constructions – 21 – B

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Country: United States Of America

Boronized drill bit cutters and methods

E - Fixed Constructions – 21 – B
Patent

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Earth boring tool with improved inserts

E - Fixed Constructions – 21 – B
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Heat treatment of welds

C - Chemistry – Metallurgy – 21 – D
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Insert with locking projection

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-156071

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