4. Communications: electrical
  5. Wellbore telemetering or control
  6. Pulse or digital signal transmission

Donald H. Ward

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Automated pipe handling system

Supports: racks – Special article – Receptacle support
Patent

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Computer-controlled oil drilling rig having drawworks motor and

Boots – shoes – and leggings
Patent

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Electrolytic plating one surface of conductive sheet

Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent

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Elevator load control arrangement for a computer-controlled oil

Boots – shoes – and leggings
Patent

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Fail-resistant solid state interruption system

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent

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Profile ID: LFUS-PAI-P-330164

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