LandOfFree - US Patents - Listing for Boring or penetrating the earth,Bit or bit element,Plural separable cutter elements

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Carbide tipped drill bit for boring holes in concrete and steel

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cast steel rock bit cutter cones having metallurgically bonded c

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Composite structure for cutting tools

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Concave drag bit cutter device and method

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Curved contact portion on engaging elements for rotary type drag

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cutter mounting and apparatus and method for a drill bit

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cutter mounting for drag bits

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cutting and drilling apparatus with threadably attached compacts

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cutting element for a rotary drill bit and method for making sam

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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Cutting element with wear resistant crown

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Patent

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