4. Wells
  5. Packers or plugs
  6. Deformable portion engages conduit restriction

Theresa J. Williams, legal representative

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Bearing assembly inner barrel and well drilling equipment...

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – Rotary drive for a relatively advancing tool
Reexamination Certificate

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Bearing assembly retaining apparatus and well drilling...

Wells – Above ground apparatus – With seal for reciprocating member
Reexamination Certificate

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Bearing assembly retaining apparatus and well drilling...

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – Rotary drive for a relatively advancing tool
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Kelly driver

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – Rotary drive for a relatively advancing tool
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Spring load seal assembly and well drilling equipment...

Wells – Packers or plugs – Deformable portion engages conduit restriction
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-2192763

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