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

E. Phillip Koltos

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Concave drag bit cutter device and method

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

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Silicone fluid useful as a brake fluid

Compositions – Heat-exchange – low-freezing or pour point – or high boiling... – Organic components
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Profile ID: LFUS-PAI-P-1017300

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