LandOfFree - US Patents - Listing for Boring or penetrating the earth,Means traveling with tool to constrain tool to bore along...

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Method and apparatus for horizontal drilling

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides

Patent

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Method and apparatus for optional straight hole drilling or dire

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Normally curved guide or shaft

Patent

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Method and apparatus for rotary drill guidance

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Method and apparatus of a self-aligning sleeve for the correctio

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides

Patent

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Method and means for controlling the course of a bore hole

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Mine drilling apparatus and method

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Mining machinery

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Patent

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Modular housing for a rotary steerable tool

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides

Reexamination Certificate

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Modulated bias unit for rotary drilling

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Modulated bias unit for rotary drilling

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Modulated bias unit for rotary drilling

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Modulated bias units for steerable rotary drilling systems

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Patent

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Movable joint bent sub

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Patent

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Multiple cam directional controller for steerable rotary drill

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Reexamination Certificate

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