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

Richard H. Grappendorf

E - Fixed Constructions – 21 – B

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Country: United States Of America

Bit design for a rotating bit incorporating synthetic...

E - Fixed Constructions – 21 – B
Patent

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Cutter configuration for a gage-to-shoulder transition and...

E - Fixed Constructions – 21 – B
Patent

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Diamond cutting element in a rotating bit

E - Fixed Constructions – 21 – B
Patent

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Drill bit

E - Fixed Constructions – 21 – B
Patent

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Earth boring bit for soft to hard formations

E - Fixed Constructions – 21 – B
Patent

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Bit design for a rotating bit incorporating synthetic...

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-694274

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