4. Boring or penetrating the earth
  5. Bit or bit element
  6. With helical-conveying portion

Richard A. Bradley

Inventor

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All-dielectric optically variable pigments

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate

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Auger planter

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion
Patent

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Auger planter method

Boring or penetrating the earth – Processes
Patent

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Profile ID: LFUS-PAI-P-1984609

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