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

Thomas W. Cooper

E - Fixed Constructions – 21 – B

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Country: United States Of America

Reverse lock mechanism

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

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Rotary rock bit with improved thrust flange

E - Fixed Constructions – 21 – B
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Seal for a rolling cone cutter earth boring bit

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-145882

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