4. Wells
  5. Processes
  6. With indicating, testing, measuring or locating

John R. Ryberg

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Detonating cord cutter

Cutlery – Cutting tools – Plural cooperating blades
Patent

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Downhole activation circuit valving

Wells – Processes – Placing or shifting well part
Patent

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Small hole retrievable perforating system for use during extreme

Wells – Processes – With indicating – testing – measuring or locating
Patent

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Well isolation system

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent

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Profile ID: LFUS-PAI-P-453450

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