4. Wells
  5. Packers or plugs
  6. With expanding anchor

George Telfer

Inventor

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Activating means for a down-hole tool

Wells – With electrical means – Magnetic
Patent

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Apparatus incorporating jet pump for well head cleaning

Wells – Wiper
Reexamination Certificate

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Circulation tool

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Combined milling and scraping tool

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate

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Compression set packer and method of use

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Profile ID: LFUS-PAI-P-541780

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