LandOfFree - US Patents - Listing for Boring or penetrating the earth,With below-ground tool drive prime mover,Fluid rotary type

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Thrust bearing assembly

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Reexamination Certificate

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Thrust bearing assembly for a downhole drill motor

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Thrust-bearing assembly

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Reexamination Certificate

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Torque compensation apparatus for bottomhole assembly

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Transistion layer polycrystalline diamond bearing

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Turbo-coring device equipped with a following pipe

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Turbodrill

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Turbodrill with a reduced drilling fluid pressure on a floating

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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Turbodrill with asymmetric stator and rotor vanes

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Reexamination Certificate

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Turbodrills

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Patent

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