4. Cutlery

Morgan L. Crow

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Axial compression positive rock bit seal

Cutlery
Patent

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Drag bit

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements
Patent

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Hydraulic jarring tool

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

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Long-life milled tooth cutting structure

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Symmetrical seal for a rolling cone cutter earth boring bit

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Profile ID: LFUS-PAI-P-352964

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