4. Boring or penetrating the earth
  5. Bit or bit element
  6. Rolling cutter bit or rolling cutter bit element

Cary A. Roth

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Hard facing for milled tooth rock bits

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

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Hard facing for milled tooth rock bits

Abrasive tool making process – material – or composition – With inorganic material – Metal or metal oxide
Patent

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Hermetically welded belleville seal for rock bits

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

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Hermetically welded belleville seal for rocks bits

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

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Profile ID: LFUS-PAI-P-83393

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