4. Wells
  5. Valves, closures or changeable restrictors

Roy H. Cullen

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Electrical cable feeding and removing apparatus

Wells – Above ground apparatus – Moving tubing or cable into an existing well
Patent

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Electrical cable overshot-grappling tool

Handling: hand and hoist-line implements – Grapple – Well type
Patent

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Electrical cable reeling apparatus

Electricity: transmission to vehicles – Flexible extensions – Reels
Patent

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Electrical kelly cock assembly

Geometrical instruments
Patent

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Electrical power conductor apparatus for earth boring

Geometrical instruments
Patent

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Profile ID: LFUS-PAI-P-151075

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