4. Boring or penetrating the earth
  5. Bit or bit element
  6. Plural separable cutter elements

George S. Sawyer

Inventor

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Attachment means for attaching a wheelchair to a motorized...

Motor vehicles – Motor-carrying attachments – Driven steering wheel type
Reexamination Certificate

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Drill bit with decreasing diameter cutters

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements
Patent

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Profile ID: LFUS-PAI-P-653717

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