4. Wells
  5. Above ground apparatus
  6. With tube rotating means

Campbell Industries Ltd.

Corporate Assignee

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Coupling device for a drive assembly

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Integral tubing head and rotator

Wells – Above ground apparatus – With tube rotating means
Patent

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Rotating rod string position adjusting device

Wells – Processes – Placing or shifting well part
Patent

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