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

Howard E. Mitchell

E - Fixed Constructions – 21 – B

Inventor

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Inventor

Country: United States Of America

Locking apparatus for earth boring cutter or stabilizer

E - Fixed Constructions – 21 – B
Patent

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Removable stem for raise bit

E - Fixed Constructions – 21 – B
Patent

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Removable stem for raise bits

F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent

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Self-cleaning raise boring head system

E - Fixed Constructions – 21 – B
Patent

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Skewed inserts for an earth boring cutter

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-74840

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