4. Wells
  5. Expansible anchor or casing
  6. Expansible means translated by wedge or cam

Charles D. Crickmer

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Buoyant counterbalancing for drill string

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent

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Well setting tool

Wells – Valves – closures or changeable restrictors
Patent

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Well tool

Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent

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Well tool

Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent

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Profile ID: LFUS-PAI-P-463565

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