4. Geometrical instruments

Gary L. Marsh

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Gas kick detector

Communications: electrical – Wellbore telemetering or control – Selective control of subsurface equipment
Patent

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Subsea power fluid accumulator

Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
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Tank and valve cover with transporting assembly

Handling: hand and hoist-line implements – Detachable lifter – Band type
Patent

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Telemetering drill string with piped electrical conductor

Geometrical instruments
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Profile ID: LFUS-PAI-P-1258681

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