4. Boring or penetrating the earth
  5. Bit or bit element
  6. Magnetized or with magnet

Bruce H. Walker

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Earth-boring drill bits

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent

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Earth-boring drill bits

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent

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Rotary bit with jet nozzles

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

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Tamper resistant governor control rod cover

Internal-combustion engines – Frame construction – Horizontal cylinder
Patent

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Profile ID: LFUS-PAI-P-750575

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