LandOfFree - US Patents - Listing for Boring or penetrating the earth,Below-ground impact members,Fluid-operated

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Fishing jar for accommodation of excess tensile load

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

Patent

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Fluid distributor device for down-hole-drills

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

Reexamination Certificate

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Fluid dump mechanism

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

Patent

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Fluid operated drill apparatus

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

Patent

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Fluid operated vibratory jar with rotating bit

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

Patent

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Fluid operated vibratory jar with rotating bit

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

Patent

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Fluid operated vibratory oil well drilling tool

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

Patent

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Fluid operated vibratory oil well drilling tool with anti-chatte

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

Patent

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Fluid Powered drilling jar

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

Patent

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Fluid powered rotary percussion drill with formation disintegrat

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

Patent

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Fluid retarded accelerating jar with negative and positive press

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

Patent

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