4. Liquid purification or separation
  5. Filter
  6. Movable medium

Robert W. Evans

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Accelerator for fishing jar with hydrostatic assist

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent

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Ball valve assembly

Wells – Valves – closures or changeable restrictors – Rotated operator
Patent

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Ball valve assembly

Fluid handling – Processes
Patent

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Belleville spring guide system

Spring devices – Bendable along flat surface – Ring or annular spider
Reexamination Certificate

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Car head-up displays including an adjustable plane mirror lensle

Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent

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Profile ID: LFUS-PAI-P-289239

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