4. Conveyors: power-driven
  5. Conveyor system for arranging or rearranging stream of items
  6. By laterally or vertically moving successive items in...

J. C. Birdwell

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Adjustable rollers for positioning pipe

Patent

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Fluid means for data transmission

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
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Hydraulically operated downhole motor

Boring or penetrating the earth – With below-ground tool drive prime mover – Below-ground storage of motivating energy
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Mud pump

Pumps – Expansible chamber type – Valved piston
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Mud pump

Pumps – Motor driven – Relatively movable pumping members driven by relatively...
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Profile ID: LFUS-PAI-P-13890

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