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

Kendall E. Keene

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Annular seal

Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for a pipe – conduit – or cable
Reexamination Certificate

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Earth boring auger

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

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Fire-resistant gate valve

Valves and valve actuation – Reciprocating valve – Gate
Patent

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Profile ID: LFUS-PAI-P-1699335

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