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

Christopher L. Drenth

E - Fixed Constructions – 21 – B

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Inventor

Country: Canada

Braking devices and methods for use in drilling operations

E - Fixed Constructions – 21 – B
Patent

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Jointed spearhead assembly

E - Fixed Constructions – 21 – B
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Rod joint

E - Fixed Constructions – 21 – B
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Vibratory unit for drilling systems

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1414671

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