4. Fluid handling
  5. Liquid level responsive or maintaining systems
  6. By float controlled valve

Otis Engineering Corp.

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Apparatus and method for enhanced oil recovery

Wells – Processes – Heating – cooling or insulating
Patent

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Connector assembly for wireline tool string

Joints and connections – Including ancillary means blocking disconnection of joint – Blocker is catch or key
Patent

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Downhole inspection system

Measuring and testing – Borehole or drilling – Downhole test
Patent

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Method and apparatus for enhanced oil recovery

Wells – Processes – Heating – cooling or insulating
Patent

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Pressure actuated cleaning tool

Wells – Detents or clutches – Lug in closed branched slot
Patent

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Profile ID: LFUS-PAI-P-211408

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