LandOfFree - US Patents - Listing for Bearings,Rotary bearing,Roller drill bit

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Resilient bearing seal with ability to compensate for wear and c

Bearings – Rotary bearing – Roller drill bit

Patent

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Rock bit bearing material

Bearings – Rotary bearing – Roller drill bit

Patent

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Rock bit bearing pressure equalization system

Bearings – Rotary bearing – Roller drill bit

Patent

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Rock bit cone retention

Bearings – Rotary bearing – Roller drill bit

Patent

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Rock bit cone retention means

Bearings – Rotary bearing – Roller drill bit

Patent

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Rock bit cutter retainer with differentially pitched threads

Bearings – Rotary bearing – Roller drill bit

Patent

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Roller bit

Bearings – Rotary bearing – Roller drill bit

Patent

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Roller cutter drill bit having a texturized seal member

Bearings – Rotary bearing – Roller drill bit

Patent

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Rolling cutter drill bits

Bearings – Rotary bearing – Roller drill bit

Patent

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Rolling cutter drill bits

Bearings – Rotary bearing – Roller drill bit

Reexamination Certificate

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Rolling cutter drill bits

Bearings – Rotary bearing – Roller drill bit

Reexamination Certificate

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Rotary drill bit

Bearings – Rotary bearing – Roller drill bit

Patent

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Rotary drill bit

Bearings – Rotary bearing – Roller drill bit

Patent

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Rotary drill bit ball plug

Bearings – Rotary bearing – Roller drill bit

Patent

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Rotary drill bit with conical rotary cutters

Bearings – Rotary bearing – Roller drill bit

Patent

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Rotation mechanism for rotating a ring

Bearings – Rotary bearing – Roller drill bit

Reexamination Certificate

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