4. Boring or penetrating the earth
  5. With storage means for bit lubricant carried by bit or shaft
  6. With fluid pressure-actuated feed means

Roy W. Wood

Inventor

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Double face oven seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Drill bit (A)

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Reexamination Certificate

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Drill bit (b)

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Reexamination Certificate

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Drill bit assembly

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means
Patent

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Drill bit assembly having improved operational life

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent

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Profile ID: LFUS-PAI-P-585179

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