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Simultaneous drilling and casing device

Boring or penetrating the earth – Boring without earth removal – Drive point detached from shaft to form cased bore or with...
Patent

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Small diameter impact boring tool impact head

Boring or penetrating the earth – Boring without earth removal
Patent

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Soil displacement hammer

Boring or penetrating the earth – Boring without earth removal
Patent

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Soil displacement hammer with reversing mechanism

Boring or penetrating the earth – Boring without earth removal
Patent

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Soil sample containment device and method

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Reexamination Certificate

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Soil sample core extraction tool

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sample core system

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sample extraction tool

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sample probe

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sample procuring tool and associated method of testing the

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sample procuring tool and method of preparing soil...

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Reissue Patent

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Soil sample taker

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampler

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampler

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampler

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampler

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampler device

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampling apparatus

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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Soil sampling apparatus

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Reexamination Certificate

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Soil sampling apparatus and a geological observation method usin

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent

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