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Apparatus and method for coring and/or drilling

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

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Apparatus and method for obtaining a core at in situ pressure

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

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Apparatus and method for obtaining subterranean samples

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

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Apparatus and method to drill and lift core-drilled...

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

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Apparatus for hard rock sidewall coring a borehole

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

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Apparatus for obtaining a soil core sample

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

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Apparatus for obtaining a soil core sample

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

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Apparatus for recovering ground soil samples

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

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Assembly and method for extracting discrete soil samples

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

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