LandOfFree - US Patents - Listing for Boring or penetrating the earth,Boring without earth removal,Fluid passage to exterior of drive point

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Method and apparatus for enlarging a bore hole

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Method for sinking a borehole in the ground and wet boring tool

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Reexamination Certificate

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Method for steering a ground-drilling machine

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Post hole digger

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Ram boring apparatus

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Rotatable drill pipe having an auger on a free end thereof

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Soil-displacement drill and method for manufacturing a pile

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Well boring method and apparatus

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Well point

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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Well point and method of driving same

Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point

Patent

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