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

Andrew B. Campbell

E - Fixed Constructions – 21 – B

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Drilling rig jack mechanism

E - Fixed Constructions – 21 – B
Patent

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Positioning of well pipe jack in a rig

E - Fixed Constructions – 21 – B
Patent

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Tool for making and breaking pipe joints

E - Fixed Constructions – 21 – B
Patent

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Well casing jack mechanism

E - Fixed Constructions – 21 – B
Patent

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Well pipe jack

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-59121

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