4. Boring or penetrating the earth
  5. With receptacle

Varel Manufacturing Company

Corporate Assignee

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Corporate Assignee

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Asymmetrical rotary cone bit

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

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Bearing seal for rotating cutter drill bit

Bearings – Rotary bearing – Roller drill bit
Patent

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Cable tool with circulating drill stem

Boring or penetrating the earth – With receptacle
Patent

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Drill bit bearing seal

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

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Filament wound bearing

Cutlery
Patent

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Profile ID: LFUS-PAI-P-474098

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